Gina In, MD

Adult, Child & Adolescent Psychiatry

Dr. In received her undergraduate education at Emory University and obtained her medical degree from Texas Tech University Health Sciences Center. She completed a residency in Psychiatry at Louisiana State University – Ochsner in New Orleans, and a fellowship in Child and Adolescent Psychiatry at the University of Texas Medical Branch in Galveston. Dr. In is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. In is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, American Academy of Child and Adolescent Psychiatry, American Medical Association, Texas Medical Association, and Harris County Medical Society.

Dr. In treats children, adolescents, and adults in her outpatient practice. She has a special interest in the treatment of mood and anxiety disorders, as well as child and adolescent attention deficit hyperactivity disorder.

• PEARLAND

11233 Shadow Creek Parkway, Suite 200
Pearland, TX 77584

	832-757-1177
	832-460-6424
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Hong Chai, MD, PhD

Adult, Child & Adolescent Psychiatry

Dr. Chai obtained his medical degree from the Zhejiang Medical University in Hangzhou, China. He later earned a PhD in Neuroscience from the University of Hong Kong. He completed a residency in Psychiatry at the University of Alabama at Birmingham and a fellowship in Child and Adolescent Psychiatry at the University of Texas Medical Branch in Galveston. He served as a Chief Resident during both his residency and fellowship. He is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Chai is a member of the American Psychiatric Association, and the Texas Society of Psychiatric Physicians.

Dr. Chai treats children, adolescents, and adults in his outpatient practice.

• SAN FELIPE

5151 San Felipe, Suite 1470
Houston, TX 77056

	713-622-4499
	713-622-3466
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Vatsala Bhaskaran, MD

Adult Psychiatry

Dr. Bhaskaran graduated with Honors from Kilpauk Medical College in Madras, India. She completed her Psychiatric Residency at Baylor College of Medicine and served as Chief Resident during her final year of training. She is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Bhaskaran is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, and Houston Psychiatric Society, Texas Medical Association, and Harris County Medical Association. She was is a Fellow of the American Psychiatric Association. She has received the Outstanding Teaching Award selected by the residents of the Department of Psychiatry at the University of Texas Medical School at Houston. At one time she was the second-ranked table tennis player in India, and represented her native country in the World Championship and Commonwealth Games in Melbourne, Australia, and the World Championship competition in Calcutta later that same year.

Dr. Bhaskaran now has an exclusively outpatient practice serving adults of all ages. She has a special clinical interest in patients with mood and anxiety disorders. She also supervises the Physician Directed Intensive Outpatient Program at the South office.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Edward C. Fallick, DO

Adult, Child & Adolescent Psychiatry

Dr. Fallick attended Adelphi University in Long Island, New York, and Fairleigh Dickenson University in Madison, New Jersey, before obtaining his medical degree from Kirksville College of Osteopathic Medicine in Kirksville, Missouri. He completed a residency in Psychiatry at the University of Missouri at Columbia, Missouri, and was selected as Chief Resident during his training. Subsequently he completed a Fellowship in Child and Adolescent Psychiatry at the University of Michigan at Ann Arbor. He is board certified in Psychiatry by the American Osteopathic Board of Neurology and Psychiatry.

Dr. Fallick holds memberships in the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, Texas Medical Association, Harris County Medical Society, Texas Osteopathic Medical Association, American College of Osteopathic Neurologists and Psychiatrists, and American Society of Addiction Medicine.

In addition to his outpatient practice, Dr. Fallick practices addiction-focused psychiatry at the Memorial-Hermann Prevention and Recovery Center (PaRC). He also serves as Medical Director of the Young Adult Program at the PaRC. Dr. Fallick treats adolescents and adults, and has a special interest in mood disorders and addiction medicine.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Garima Arora, MS, MD

Adult Psychiatry

Dr. Arora received her medical degree from MLN Medical College, Allahabad, India, and a Masters of Science in Tumor Biology at Georgetown University in Washington, DC. She completed her residency in Psychiatry at the University of Texas Health Science Center McGovern Medical School in Houston, serving as Chief Resident during her final year of training. Dr. Arora subsequently completed a two-year Fellowship in Behavioral Neurology and Neuropsychiatry also at the McGovern Medical School. She is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Arora maintains an affiliation with the University of Texas Health Science Center McGovern Medical School where she is an Assistant Professor in the Department of Psychiatry and Behavioral Sciences with a cross appointment in the Geriatric and Palliative Medicine division of the Department of Internal Medicine. She also works with the Huntington’s Disease Center of Excellence in the Department of Neurology. She is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, American Medical Association, Texas Medical Association, Harris County Medical Society, Society of Biological Psychiatry, American Neuropsychiatric Association, American Academy of Neurology, Texas Neurological Society, and Harris County Neurological Society. She is a Fellow of the American Psychiatric Association.

Dr. Arora treats adults eighteen years of age or older in an outpatient practice. She has a special interest in cognitive disorders, neurodegenerative diseases, and psychiatric manifestations of neurological diseases.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Nilgun Giray, MD

Adult Psychiatry & Sleep Medicine

Dr. Giray obtained her medical degree from the University of Istanbul School of Medicine. After serving as an intern at the University of Zurich, she returned to Turkey to complete a Residency in Neurology at the University of Istanbul, Cerrahpasa School of Medicine. She completed a Fellowship in Sleep Disorders at Baylor College of Medicine and was a Postdoctoral Fellow at Baylor. She subsequently completed a Residency in Psychiatry at the University of Texas Medical School at Houston. Before entering private practice, she served as a Staff Psychiatrist at the Michael E. DeBakey Veterans Medical Center in Houston. She is board certified in Psychiatry as well as Sleep Medicine by the American Board of Psychiatry and Neurology, and in Sleep Medicine by the American Board of Sleep Medicine.

Dr. Giray is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, Texas Medical Association, Harris County Medical Society, and U.S. Southern Sleep Society. She is a former President of the U.S. Southern Sleep Society.

Dr. Giray sees adult patients in an office setting. In addition to a general psychiatric practice, she is an expert in sleep medicine. She currently serves on the steering committee and as a volunteer faculty member for the Sleep Disorders Fellowship program at Baylor College of Medicine, and is a consultant at Baylor’s Sleep Disorders Center. She also supervises both the Physician Directed Intensive Outpatient Program and the Sleep Support Program at the Loop Central office. She is fluent in Turkish as well as English. Dr. Giray is also Spravato REMS Certified.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Elizabeth Hedden, MD

* After 30 years of practice, Dr. Hedden will be closing her outpatient practice effective July 20, 2022. She will remain with GHPA as the attending physician with the physician directed intensive outpatient therapy program at the Fuqua location. *

Adult, Child & Adolescent Psychiatry

Elizabeth Hedden received her medical degree from The University of Texas Medical Branch at Galveston. She subsequently completed a residency in Psychiatry and a Fellowship in Child and Adolescent Psychiatry at the University of Texas Medical School at Houston. Dr. Hedden is board certified by the American Board of Psychiatry and Neurology in both Psychiatry and Child and Adolescent Psychiatry.

She maintains memberships in the American Psychiatric Association, Texas Society of Psychiatric Physicians, American Academy of Child and Adolescent Psychiatry, Texas Academy of Child and Adolescent Psychiatry, Texas Medical Association, and Harris County Medical Society.

Dr. Hedden treats patients ages four and older, and has a special clinical interest in children and adolescents with attention deficit disorders, pervasive developmental disorders, and mood disorders. In adult patients, she specializes in the treatment of mood and anxiety disorders.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Vaidyanath Iyer, MD, DrPH

Adult Psychiatry

Dr. Iyer received his medical degree in India from Baroda Medical College. He also holds a Masters of Public Health from Harvard University, a Masters in the Advanced Management Program for Clinicians from New York University, and a Doctorate of Public Health from the University of Alabama. He served as an intern at University Hospital in Stonybrook, New York, and completed a residency in Psychiatry at the University of Pittsburgh. He is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Iyer is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, and Texas Medical Association. He has been a recipient of the American Cancer Society Fellowship from the American Health Foundation in New York. He is a Fellow of the American Psychiatric Association.

Dr. Iyer sees only adult patients in his exclusively outpatient practice. He is particularly interested in the pharmacological treatment of mood, anxiety, and psychotic disorders.

• THE WOODLANDS

9191 Pinecroft Drive, Suite 250
The Woodlands, TX 77380

	281-465-9300
	281-419-0958
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Sheila Liu, MD, PhD

Adult Psychiatry

Dr. Liu graduated from the Zhejiang University Medical School in Hangzhou, China. After completing a surgical residency, she served as a medical school instructor in physiology and psychology for several years. She earned a PhD in Biological Psychology from SUNY at Stony Brook, New York. She subsequently was a Postdoctoral Fellow and researcher at the University of Texas Southwestern Medical Center and published numerous papers on gene mapping and psychopharmacology. She then completed a residency in Psychiatry at the University of Texas Medical School at Houston. She is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Liu is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, and Houston Psychiatric Society. She was awarded the Seay Biomedical Research Fellowship while at the University of Texas Southwestern Medical Center, and later received the “New Investigator Award” by the National Institute of Mental Health during her residency training.

Dr. Liu sees adult patients age eighteen and older in an exclusively outpatient practice. She has a clinical interest in a wide range of psychiatric conditions including mood disorders, psychotic disorders, and stress and anxiety disorders. She is fluent in Mandarin Chinese as well as English.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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John E. Marcellus, MD

Adult, Child & Adolescent Psychiatry

Dr. Marcellus obtained his undergraduate degree from Georgetown University and his medical degree from the University of Mississippi Medical School. Subsequent postgraduate training included a residency in Psychiatry and a Fellowship in Child and Adolescent Psychiatry at Baylor College of Medicine. He is board certified by the American Board of Psychiatry and Neurology in both Psychiatry and Child and Adolescent Psychiatry.

Dr. Marcellus is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, American Association of Child and Adolescent Psychiatry, Texas Medical Association, and Harris County Medical Society. He was a recipient of the Eli Lilly Fellowship Program of the U.S. Psychiatric and Mental Health Congress, and has served on the Board of Directors of Mental Health America of Greater Houston. He is an examiner for the American Board of Psychiatry and Neurology.

Dr. Marcellus sees patients ages four and older in both office and hospital settings. He is the Chief Medical Officer at Houston Behavioral Healthcare Hospital and also serves as a consultant to the National Aeronautics and Space Administration on astronaut selection and behavioral health policy. He has a special interest in the treatment of ADHD and mood disorders. Dr. Marcellus is also Spravato REMS Certified.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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James A. Nelson, MD

Adult, Child & Adolescent Psychiatry

Dr. Nelson graduated from the University of Texas – Pan American University with a BS in Biology and a Masters in Psychology. After practicing psychotherapy for several years, he attended the University of Texas Medical School at Houston where he obtained his medical degree. His postgraduate training included a residency in Psychiatry and a Fellowship in Child and Adolescent Psychiatry at the University of Texas Medical School at Houston. He is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Nelson is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, Texas Medical Association, and Harris County Medical Society. He was elected by students of the University of Texas Medical School at Houston to receive the Arnold P. Gold “Humanism and Excellence in Teaching Award” during his residency. He served as Chief Resident during the Child and Adolescent Fellowship program.

Dr. Nelson sees child, adolescent, and adult patients ages five through fifty-five in his office practice. He has a special interest in the treatment of mood and anxiety disorders, as well as child and adolescent ADHD.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Tu-Lan Nguyen, MD

Adult, Child & Adolescent Psychiatry

Dr. Nguyen received her undergraduate education at St. Thomas University in Houston where she graduated magna cum laude. She obtained her medical degree from the University of Texas Medical School at Houston. She subsequently completed her residency in Psychiatry and fellowship in Child and Adolescent Psychiatry at the University of Texas Medical School at Houston. She is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Nguyen holds memberships in the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, American Academy of Child and Adolescent Psychiatry, Texas Medical Association, and Harris County Medical Society. She supervises child psychiatry fellows from the University of Texas Medical School program at Devereux Texas, a residential treatment program in League City.

Dr. Nguyen treats children, adolescents, and adults in her outpatient practice focusing on medication management with a ‘bio-psycho-social’ perspective. She is also Medical Director of an adolescent unit and a young adult unit at Devereux Texas.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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George D. Santos, MD

Adult Psychiatry

Dr. Santos received his undergraduate degree from the University of Notre Dame and his medical degree from the University of Texas Medical School at Houston. He subsequently completed a residency in Psychiatry at the University of Texas Medical School at Houston. He is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Santos is a member of the American Psychiatric Association, American College of Psychiatrists, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, American Medical Association, Texas Medical Association, and the Harris County Medical Society. He is a Distinguished Fellow of the American Psychiatric Association, and is a past President of both the state and local psychiatric societies. He is a Past President of the Harris County Medical Society, and a member of the Board of Trustees of the Harris Center for Mental Health and IDD. He served as an examiner for the American Board of Psychiatry and Neurology and as a member of the Texas Medical Board Expert Panel. In 2008 the Texas Society of Psychiatric Physicians honored him with their prestigious Psychiatric Excellence Award.

Dr. Santos sees adult patients in his outpatient practice. He has special clinical interests in the treatment of mood and chemical dependency disorders, and electroconvulsive therapy (ECT).

• SAN FELIPE

5151 San Felipe, Suite 1470
Houston, TX 77056

	713-622-4499
	713-622-3466
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Marisa Suppatkul, MD

Adult, Child & Adolescent Psychiatry

Dr. Suppatkul obtained both a BS with Honors from Texas A&M University and a BA with Honors from the University of Texas at Austin. She completed her medical education at the University of Texas Medical Branch at Galveston. She subsequently completed a residency in Psychiatry at the University of Texas Medical Branch at Galveston and a Fellowship in Child and Adolescent Psychiatry at the University of Texas Medical School at Houston. She was Chief Resident in the Child and Adolescent program during her final year of training. She is board certified in both Psychiatry and Child and Adolescent Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Suppatkul is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, American Academy of Child and Adolescent Psychiatry, Texas Medical Association, and Harris County Medical Society. She received the David Mendell Fellowship Award presented to the premier resident in the Child and Adolescent Fellowship program at the University of Texas Medical School at Houston. The AACAP selected her for the Outstanding Child and Adolescent Resident “Young Leaders Award”.

Dr. Suppatkul sees patients six years of age and older in her outpatient practice. She offers comprehensive, culturally competent care to our diverse community of members, and is committed to providing non-biased, affirming care for the LGBTQ+ community. Moreover, she has a special clinical interest in Autism Spectrum Disorder and Obsessive Compulsive Disorder (OCD).

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Robert L. Woodham, MD

Adult & Addiction Psychiatry

Dr. Woodham received his undergraduate education at Rice University, graduating cum laude with a degree in Physics. He obtained his medical degree from the University of Texas Medical Branch at Galveston. His subsequent training included an internship at the University of Virginia Medical School in Charlottesville, Virginia, and a residency in Psychiatry at the University of Texas Medical School at Houston. He served as Chief Resident during the final two years of his residency. He is board certified in Psychiatry by the American Board of Psychiatry and Neurology. The ABPN also awarded him Qualifications in Addiction Psychiatry. He was previously board certified in Addiction Medicine by the American Society for Alcoholism and Other Drug Dependencies.

Dr. Woodham’s professional memberships include the American Psychiatric Association, Texas Society of Psychiatric Physicians, Houston Psychiatric Society, Texas Medical Association, and Harris County Medical Society. He is a Fellow of the American Psychiatric Association.

Dr. Woodham treats adult and adolescent patients in an exclusively outpatient practice, and specializes in psychopharmacology and the treatment of substance use disorders. He is certified to provide buprenorphone (Subutex) treatment.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Christine Brannan, MEd, LPC, LCDC

Adult & Adolescent Therapy

Ms. Brannan graduated from the University of Northern Colorado with a BA degree in Psychology. She subsequently completed her professional education at the University of Houston Victoria with a Masters degree in Education. She is a Licensed Professional Counselor and a Licensed Chemical Dependency Counselor, and is member of the American Counselors Association.

Ms. Brannan sees patients twelve years of age and older, and has a special clinical interest in Chemical Dependency. Her therapy style is primarily cognitive behavioral.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Stella Edmondson, LCSW

(PROVIDER LEAVING AUGUST 2024)

Adult, Child & Adolescent Therapy

Ms. Edmondson obtained her undergraduate degree in Sociology from the University of Houston and subsequently received a Masters degree from the University of Houston Graduate School of Social Work. She is a Licensed Clinical Social Worker and is certified by the Academy of Certified Social Workers as an Advanced Clinical Practitioner. She is a member of the National Association of Social Workers.

Ms. Edmondson treats individuals as young as five years of age in a general psychotherapy practice. She sees couples and families in addition to individual patients. She has a special interest in Borderline Personality Disorder, and has directed dialectical behavioral therapy (DBT) groups. She is fluent in Spanish as well as English.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Coleen “Kelly” Essary, MA, LPC

Adult, Child & Adolescent Therapy

Ms. Essary graduated from the University of Houston Clear Lake with a BA in Psychology. She also completed her professional education at the University of Houston Clear Lake with a Masters in Marriage and Family Counseling. She is a Licensed Professional Counselor. She maintains membership in the Houston Association for Marriage and Family Therapy as well as the Psi-Chi Honor Society, the national honor society for students of psychology.

Ms. Essary sees patients ages five and older in individual, couples, and family psychotherapy.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Tom Gates, MA, LMFT, LCDC

Adult, Child & Adolescent Therapy

Mr. Gates graduated from Texas A&M University with a BS in Sociology. His professional education was at Liberty University where he received a Masters in Counseling. He is a Licensed Marriage and Family Therapist and a Licensed Chemical Dependency Counselor.

Mr. Gates sees patients ages eight and older in individual, couples, and family psychotherapy, and uses a cognitive-behavioral therapy approach.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Theresa A. James, MEd, LPC

Adult Therapy

Ms. James graduated summa cum laude from the University of Houston. She completed her professional education at the University of Houston Victoria with a Masters in Education. She is a Licensed Professional Counselor and is board certified by the National Board of Certified Counselors. She holds memberships in the Texas Counseling Association, Phi Kappa Phi National Honor Society, and Chi Sigma Iota Counseling Academic and Professional Honor Society International.

Ms. James sees adult patients in individual, couples, and family psychotherapy. She has a special interest in grief and loss, depression, and anxiety. Her therapy style is primarily cognitive behavioral.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Tom Leffler, MEd, LPCC

Adult, Child & Adolescent Therapy

Mr. Leffler received his undergraduate degree from the University of Texas at Austin, and was awarded a Masters in Education from the University of Houston. He is a Licensed Professional Counselor. He maintains memberships in the Employee Assistance Program Association and the American Psychotherapy Association.

Mr. Leffler sees patients ages eight and older in individual, couples, and family psychotherapy. He has a special clinical interest in men’s issues.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Vivian Levin, LCSW

Adult Therapy

Ms. Levin obtained her undergraduate degree in Sociology from the University of Houston, and received a Masters degree from the University of Houston Graduate School of Social Work. She is a Licensed Clinical Social Worker and is certified by the Academy of Certified Social Workers as an Advanced Clinical Practitioner.

Ms. Levin treats adult patients age eighteen and older in individual, couples, and family psychotherapy. She has special clinical interest in grief and loss, anxiety and depression, and relationship issues.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Roberto Mendez, MA, LPC

Adult & Adolescent Therapy

Mr. Mendez graduated from Houston Baptist University with a BA in Psychology and Sociology. He completed his professional education with a Masters in Psychology from Houston Baptist University. He is a Licensed Professional Counselor and certified by the Texas State Board of Professional Examiners to provide clinical supervision of candidates for Licensed Professional Counselor. He is a member of the Houston Licensed Professional Counselors Association.

Mr. Mendez sees patients age fourteen and older. His clinical interests include mood disorders, chemical dependency, sexual orientation issues, grief, and relationship problems. He works comfortably with ‘GLBT’ patients and is fluent in Spanish as well as English.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Heather Sauer, M.D.

Adult, Child & Adolescent Psychiatry

Dr. Sauer received her undergraduate degree from Washington University in St. Louis and her MD degree from Saint Louis University School of Medicine. She subsequently completed both a residency in Psychiatry and a fellowship in Child and Adolescent Psychiatry at the University of Texas Medical Branch in Galveston. She served as Chief Resident during her fellowship. She is board certified in both Psychiatry and Child and Adolescent Psychiatry by the American Board of Psychiatry and Neurology.

She maintains memberships in the Texas Medical Association, and Harris County Medical Society.

In addition to her outpatient practice, Dr. Sauer is currently the Clinical Medical Director for Youth Services at Houston Behavioral Healthcare Hospital where she works with children, teens and adults.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Madonna Yancey, MS, LPC, LCDC

Adult, Child & Adolescent Therapy

Ms. Yancey obtained a BS in Psychology graduating cum laude from the University of Houston. She subsequently completed a Masters degree in Counseling from the University of Houston at Clear Lake. She is a Licensed Professional Counselor and a Licensed Chemical Dependency Counselor. She holds certifications from the National Board for Certified Counselors, National Association for Alcoholism and Drug Abuse Counselors, and American Association of Christian Counselors.

She is a member of the National Board of Certified Counselors, American Counseling Association, Texas Counseling Association, American Mental Health Counselors Association, Association for Addiction Professionals, Texas Association of Addiction Professionals, and American Association of Christian Counselors.

Ms. Yancey treats children ages six years or older, adolescents, and adults in individual, family, and couples psychotherapy. She has a special clinical interest in substance abuse, mood disorders, grief and loss, and PTSD.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Vernon Walling, MD

(PROVIDER LEAVING SEPTEMBER 2024)

Adult, Child & Adolescent Psychiatry

Dr. Walling graduated from the University of Texas at Arlington with a BS in Biology and a BA in chemistry. He subsequently attended the University of Texas Medical School at Houston where he obtained his medical degree. His postgraduate training included an internship in Pediatrics, a residency in Psychiatry, and a Fellowship in Child and Adolescent Psychiatry at the University of Texas Medical School at Houston. He is board certified in Psychiatry and Child and Adolescent Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Walling is a member of the American Psychiatric Association, American Academy of Child and Adolescent Psychiatry, Texas Society of Psychiatric Physicians, Texas Society of Child and Adolescent Psychiatry, Houston Psychiatric Society, American Medical Association, Texas Medical Association, and Harris County Medical Society. He holds appointments as Assistant Clinical Professor at the University of Texas Medical School at Houston, Baylor College of Medicine, and the University of Texas Medical Branch in Galveston, TX.

Dr. Walling is Medical Director of SUN Behavioral Houston and is psychiatric consultant to several residential treatment facilities in the area. In his office practice he sees child, adolescent, and adult patients.

• SAN FELIPE

5151 San Felipe, Suite 1470
Houston, TX 77056

	713-622-4499
	713-622-3466
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James Mann, Jr., LMFT

Adult, Child & Adolescent Therapy

Mr. Mann graduated from Loma Linda University with a Masters degree in Marriage and Family Therapy, and is a Licensed Marriage and Family Therapist. He spent ten years serving in the U. S. Navy, providing him with a unique insight into the treatment of military veterans and their families. He is a member of the American Association of Marriage and Family Therapists.

Mr. Mann sees patients ages five and older in individual, couples, and family psychotherapy. He has expertise in trauma-focused behavioral therapy in the treatment of child survivors of abuse. While he maintains an eclectic approach to psychotherapy, cognitive behavioral therapy is his primary treatment modality.

• PEARLAND

11233 Shadow Creek Parkway, Suite 200
Pearland, TX 77584

	832-757-1177
	832-460-6424
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Elisabeth Netherton, MD

Adult Psychiatry

Dr. Netherton graduated from the University of Texas at Austin with a major in biology and an additional multi-disciplinary certificate in Children and Health. She received her medical degree from the University of Texas Health Science Center at Houston where she was recognized with the Helen Guynn Award in Psychiatry. She subsequently completed a residency in Psychiatry at Baylor College of Medicine. During her training she particularly enjoyed her work at the Texas Children’s Hospital Pavilion for Women, where she cared for women struggling with mood disorders, anxiety disorders, and other psychiatric issues in the context of infertility, pregnancy, the postpartum period, and menopause. She is board certified in Psychiatry by the American Board of Psychiatry and Neurology.

Dr. Netherton continues her affiliation with Baylor College of Medicine as an Assistant Professor of Psychiatry, supervising residents in psychotherapy, teaching medical students and residents, and seeing patients in an emergency room setting. She is a member of the American Psychiatric Association, Texas Society of Psychiatric Physicians, and Houston Psychiatric Society.

Dr. Netherton treats adult patients ages eighteen and older in her outpatient practice. She also supervises the Physician Directed Intensive Outpatient Program at the West office. Women’s mental health issues and psychodynamic psychotherapy are areas of special interest.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Ossenia Jeff, LCSW

Adult, Child, & Adolescent Therapy

Ms. Jeff received both her undergraduate degree and a Masters of Science in Social Work from The University of Texas at Austin. She is a Licensed Clinical Social Worker and a member of the National Association of Social Workers.

Ms. Jeff sees patients ages six and older in individual, family, and couples psychotherapy. She also offers targeted group sessions. Her treatment modalities include Cognitive Behavioral Therapy and Dialectical Behavioral Therapy as well as psychodynamic psychotherapy.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Teresa Petersen, LCSW

Adult, Child & Adolescent Psychiatry

Ms. Petersen obtained her undergraduate degree in Social Work from the University of Houston Clear Lake and subsequently received a Master’s degree from the University of Houston Graduate School of Social Work. She is a Licensed Clinical Social Worker and a Licensed Chemical Dependency Counselor. She is a Certified Anger Resolution Therapist and Certified ASK about Suicide Prevention Trainer. She is a member of the National Association of Social Workers.

Ms. Petersen treats individuals as young as four years of age. She sees children, adolescents, adults, and families in psychotherapy. She has a special interest in mood disorders, loss and grief, chronic stress, and trauma. She considers herself an integrative practitioner utilizing evidenced based practices that are client-centered utilizing cognitive-behavioral therapy (CBT), trauma-focused CBT, mindfulness, and body-mind modalities.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Thomas Hernandez, Jr., LPC

Adult, Child & Adolescent Therapy

Mr. Hernandez obtained his undergraduate degree from the University of Houston, and a Masters in Counseling from the University of Houston Clear Lake. He is a Licensed Professional Counselor, and a member of the American Counseling Association. He is a Master Trainer in Applied Suicide Intervention Skills Training (ASIST).

Mr. Hernandez sees patients ages eight and older in individual, couples, and family psychotherapy, and uses an eclectic approach to psychotherapy incorporating person centered therapy, cognitive behavioral therapy, and other treatment modalities.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Laura Crosby, LPC

Adult & Adolescent Therapy

Ms. Crosby obtained a BS in Criminal Justice from Florida International University in Miami. She subsequently completed a Masters degree in Counseling from Marymount University in Arlington, Virginia. She is a Licensed Professional Counselor with a certificate in Cognitive Behavioral Therapy.

She is a member of the American Counseling Association, Texas Counseling Association, and the Houston LPC Association. Her primary treatment modality is Cognitive Behavioral Therapy and the utilization of mindfulness and meditation.

Ms. Crosby treats adolescents, ages twelve and older, and adults in individual, family, and couples psychotherapy. She has a special clinical interest in anxiety and trauma-related issues.

• West Houston

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Monica Mehalshick, LCSW

Adult & Adolescent Therapy

Ms. Mehalshick obtained her undergraduate degree in Psychology and Addiction Studies from Alvernia University and subsequently received a Masters degree in Social Work from the University of Pennsylvania Graduate School of Social Policy and Practice. She is a Licensed Clinical Social Worker.

Ms. Mehalshick treats adults and adolescents in a general psychotherapy practice, and sees couples and families in addition to individual patients. She has a special interest in addiction, anxiety, depression, and marital and family issues.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Nicholas LaRocca, LPC

Adult, Child & Adolescent Therapy

Mr. LaRocca obtained a BA in Psychology graduating from Texas Tech University in 2005. He spent the next several years working in community mental health case management, early childhood intervention, and youth ministry. He subsequently completed a Master's degree in Counseling from the University of Houston–Victoria. Mr. LaRocca is a Licensed Professional Counselor and a member of the American Counseling Association.

Mr. LaRocca treats adults of all ages, teens, and children ages 10 and up along with their parents. He treats individuals for depressive and anxiety symptoms, bipolar and mood stabilization difficulties, anger and behavior issues, and individuals having trouble adjusting to difficult situations in work, school, and/or their personal lives.

Mr. LaRocca utilizes an eclectic theoretical framework that integrates Cognitive Behavioral, Existential, Humanistic and Dialectical Behavioral modalities. He has been a provider with Greater Houston Psychiatric Associates since 2019 and has completed additional training in Dialectical Behavior Therapy (DBT) which he adapts and integrates into his individual sessions with his clients when clinically indicated.

• PEARLAND

11233 Shadow Creek Parkway, Suite 200
Pearland, TX 77584

	832-757-1177
	832-460-6424
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Brent LoCaste-Wilken, LCSW

Adult, Child & Adolescent Therapy

Brent received his undergraduate degree in Sociology from Baylor University and subsequently completed a Masters degree in Social Work at the University of Houston Graduate School of Social Work. He also completed post-graduate courses in theology at Dallas Theological Seminary. He is a Licensed Master Social Worker and is also certified as a supervisor and supervisor trainer in Texas. Additionally he teaches courses in psychotherapy at the University of Houston Graduate School of Social Work.

Over the many years of Brent’s clinical career, he has developed expertise working with many populations, issues, and treatment approaches. His specialty is treating children and adolescents, but he also counsels adults with an emphasis on grief, trauma, anxiety, depression, and men’s issues. Brent utilizes play therapy, family therapy and parenting, crisis intervention, EMDR, Grief Recovery, Trauma, Unified Protocol, and several brief psychotherapies.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Debbie Arnold, LCSW

Adult, Child & Adolescent Therapy

Ms. Arnold obtained her undergraduate degree in Social Work from Texas State University and her Master’s degree in Social Work from the University of Houston. She is a Licensed Clinical Social Worker and a Licensed Clinical Social Work supervisor.

Ms. Arnold treats individuals ages eleven and older in individual and family therapy. She has special clinical interests in depression, childhood abuse, grief, parenting, adult children of alcoholics, family therapy and women’s issue. Her treatment modalities include; Cognitive Behavior therapy, (CBT), Rational Emotive Behavior Therapy, (REBT), Family therapy as well as Psychodynamic psychotherapy.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Ronda Bonnette, M.Ed., LPC, NCC

Adolescent, Adult, Couple, and Family Therapy

Ms. Bonnette obtained her Bachelor of Arts degree in Education from Southeastern Louisiana University and her Master’s of Education degree in Community Counseling from the University of New Orleans. She is All-But-Dissertation status towards obtaining her Ph.D. She is a Licensed Professional Counselor and a National Certified Counselor.

Ms. Bonnette works with individuals age eleven and older in individual, family, and couples therapy. She has special clinical interests in Trauma-Focused Therapy, Adlerian Therapy, Cognitive Behavioral Therapy, and Mindfulness.

• SOUTH HOUSTON

11550 Fuqua Street, Suite 560
Houston, TX 77034

	281-922-7333
	281-922-7369
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Demetrius Manley, LCSW

Adult and Adolescent Therapy

Demitrius received her undergraduate degree in Sociology from University of Houston Clear Lake and thereafter completed a Masters degree in Social Work at the University of Houston Graduate School of Social Work. Demitrius is a Licensed Clinical Social Worker and a Licensed Chemical Dependency Counselor in the State of Texas.

Demitrius has expertise working with many issues to include substance abuse, relationship conflicts, grief, depression, trauma, self-esteem, social justice and women’s issues. Demitrius treats individuals, families, and adolescents with a focus on Cognitive Behavior Therapy and Trauma Focused Therapy.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Shaojie Han, MD

Adult & Addiction Psychiatry

Dr. Han received his medical degree at Tongji Medical University, China, and completed his residency training in psychiatry at Rutgers New Jersey Medical School. During his fellowship at Montefiore Medical Center in New York City, he refined his expertise in treating patients with mental illnesses and substance abuse. Dr. Han is board certified in adult psychiatry and addiction psychiatry.

Dr. Han is experienced in the evaluation and management of depression, bipolar disorder, anxiety, ADHD and substance use disorders. His therapeutic approaches include medications and psychotherapies. He is also a buprenorphine (Suboxone) treatment provider.

Dr. Han’s professional memberships include the American Psychiatric Association, Texas Society of Psychiatric Physicians, and American Academy of Addiction Psychiatry. He is dedicated to creating a healthy outcome for all of his patients and being an advocate for people who suffer from mental illnesses. Dr. Han is also Spravato REMS Certified.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Sonam Bhakta, MD

Adult, Child & Adolescent Psychiatry

Dr. Bhakta completed medical school at the University of Texas Medical Branch at Galveston, TX. She subsequently completed her residency in Psychiatry and her fellowship in Child and Adolescent Psychiatry at the University of Texas Medical Branch at Galveston. She was chief resident during her final year of training in the Child and Adolescent Program. During her fellowship, she received the William S. Thayer Award for Excellence in Teaching.

Dr. Bhakta is board certified in Psychiatry by the American Board of Psychiatry and Neurology. She is a member of the American Psychiatric Association, the Texas Society of Psychiatric Physicians, the American Academy of Child and Adolescent Psychiatry, and the Texas Society of Child and Adolescent Psychiatry.

Dr. Bhakta treats children, adolescents, and adults with a wide variety of psychiatric disorders including ADHD, anxiety disorders, mood disorders, and peripartum disorders. She focuses on medication management and is dedicated to providing comprehensive, evidence-based care.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Kris Choi, MS, LPC

Adult, Child & Adolescent Psychiatry

Ms. Choi received her undergraduate degree in Elementary Education from University of Houston and her Master’s degree in Clinical Mental Health Counseling from the University of St. Thomas. She is a Licensed Professional Counselor and is a member of the Houston Counseling Association.

Ms. Choi treats individuals ages eight and older in individual, group, and family therapy. She has special clinical interests in neurodevelopmental, neurocognitive, and psychological issues with mood and anxiety. Her treatment modalities are CBT, Positive Psychology, Logotherapy, and Psychodynamic psychotherapy. She is bilingual in both English and Korean.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Ruben Mendez, MD (*Provider leaving group in June*)

Adult Psychiatry

Dr. Mendez obtained his medical degree from the University of Texas Medical School in Houston. He subsequently completed his Psychiatry residency training at the same institution, UT Medical School in Houston. Dr. Mendez has extensive training in the field and is board certified in Adult Psychiatry by the American Board of Psychiatry and Neurology.

After professional training Dr. Mendez has had vast experience in diagnosing and treating adult patients dealing with attention deficit disorders and mood disorders from clinical depression to bipolar spectrum disorders. He has special interest in anxiety disorders including Panic Disorder, PTSD and Generalized Anxiety Disorders. Dr. Mendez approach prioritizes maintaining the best rapport possible with his patients and is closely guided by evidence based practices.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Valerie L. Zanders, LCSW, PhD

Adult, Child & Adolescent Therapy

Dr. Valerie Zanders earned her undergraduate degree in Psychology from the University of California, Los Angeles and her Master’s degree in Social Work from the University of Southern California. She earned her Doctoral degree in Psychology at Capella University. She is a Licensed Clinical Social Worker and recently received honors for her work leading crisis behavioral health response efforts during the Covid-19 Pandemic. Dr Zanders has also served as a surveyor for the Accreditation Commission.

Dr. Zanders works with children, adolescents, adults, seniors, and children and adults with intellectual and developmental disabilities. She offers individual and targeted group therapy and specializes in trauma-focused cognitive behavioral therapy, behavioral therapy, crisis intervention, grief and loss, family therapy, and solution-focused therapy.

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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Oladayo Bello, APRN-CNP

Adult Psychiatry

Oladayo (Dayo) Bello is a board-certified psychiatric mental health nurse practitioner. Dayo completed her undergraduate and graduate degrees from Cizik School of Nursing at The University of Texas Health Science Center Houston.

Dayo has experience working in psychiatry mental health and medical-surgical telemetry nursing.

Dayo is passionate about providing quality care to her patients. She believes in holistic treatment and explores both pharmacological and non-pharmacological approaches in treating her patients

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Diana P. Nakad-Rodriguez, MD

Adult Psychiatry

Dr. Diana Nakad-Rodriguez obtained a bachelor’s degree in Chemical Engineering with Distinction Honors from McGill University in Montreal, Canada. After earning her medical degree from the University of Virginia in Charlottesville, Virginia, she completed one year of residency training in obstetrics and gynecology at Eastern Virginia Medical School in Norfolk, Virginia. After discovering her passion for mental health, she completed general psychiatry residency training at Carolinas Medical Center in Charlotte, North Carolina. As a psychiatry resident, she received the Award for Excellence in Psychotherapy from the Austen Riggs Center in Stockbridge, Massachusetts. She was also awarded the Pearsall Fellowship by the Psychoanalytic Center of the Carolinas to recognize her dedication to training in psychodynamic psychotherapy.

Dr. Nakad-Rodriguez treats adult patients for a wide range of psychiatric conditions, including adjustment, anxiety, depressive, psychotic and bipolar spectrum disorders, as well as PTSD and ADHD. She implements lifestyle changes, medication management and psychotherapy in her holistic approach to treating patients. In addition, she has a strong interest in perinatal and reproductive mental health and welcomes patients considering pregnancy or who are pregnant or postpartum. She also speaks English and Spanish fluently.

Dr. Nakad-Rodriguez is Board Certified in Adult Psychiatry by the American Board of Psychiatry and Neurology. She is a member of the American Psychiatric Association, the Texas Society of Psychiatric Physicians and Marcé of North America.

• SAN FELIPE

5151 San Felipe, Suite 1470
Houston, TX 77056

	713-622-4499
	713-622-3466
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Eric Chen, MD

Adult Psychiatry

Dr. Chen attained his undergraduate degree from the University of Connecticut, graduating summa cum laude, before pursuing his medical education at the same institution. He subsequently completed a residency in Adult Psychiatry at Tufts Medical Center in Boston, MA, where he distinguished himself by serving ad chief resident during his final year of training.

Dr. Chen has extensive experience in treating adult patients with a range of concerns such as attention deficit disorders, anxiety disorders, and mood disorders. Central to his practice is developing strong therapeutic alliances based on shared goals and understanding patients on a deeper level, informed by a psychodynamic perspective.

• LOOP CENTRAL

4888 Loop Central Drive, Suite 510
Houston, TX 77081

	713-346-1551
	713-346-1577
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Robert P. McKenzie, MD

Adult, Child & Adolescent Psychiatry

Dr. McKenzie earned his medical degree at the University of Texas Health San Antonio Long School of Medicine, where he also earned a master’s of science in cell and structural biology. He then completed a residency in general psychiatry and a fellowship in child and adolescent psychiatry at the University of Texas Medical Branch at Galveston. During his residency and fellowship, he received the William S. Thayer Award for Excellence in Teaching, the Arnold P. Gold Foundation Humanism and Excellence in Teaching Award, and was nominated for UTMB Outstanding Fellow of the Year.

Dr. McKenzie is board certified in Psychiatry by the American Board of Psychiatry and Neurology. He is a member of the American Psychiatric Association, the Texas Society of Psychiatric Physicians, and the American Academy of Child and Adolescent Psychiatry.

• SAN FELIPE

5151 San Felipe, Suite 1470
Houston, TX 77056

	713-622-4499
	713-622-3466
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Harry Mergel, LPC, LMFT, CEAP

Adult & Adolescent Therapy

Harry received his undergraduate degree from Abilene Christian University and earned his graduate degree in Marriage and Family Therapy from ACU. He is licensed in Texas as both a Licensed Marriage & Family Therapist (LMFT) and a Licensed Professional Counselor (LPC). With over 25 years of experience, Harry recognizes the importance family systems may hold in helping others with their therapeutic journeys, as well as those life challenges where individualized one-on-one therapy may be needed.

While there are no guarantees in therapy, Harry has had great success helping people overcome individual and relational challenges. He assists clients to identify their own strengths and resources and helps them to develop coping skills and strategies to address their concerns. These approaches are supported by research and have been shown to be effective for a diverse range of difficulties: Cognitive Behavior Therapy (CBT), Mindfulness-Based Stress Reduction (MBSR), Eye Movement Desensitization and Reprocessing (EMDR), Dialectic Behavior Therapy (DBT), and The Gottman Method of Couples Counseling

• WEST HOUSTON

2901 Wilcrest Drive, Suite 520
Houston, TX 77042

	713-400-7400
	713-974-0870
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