Greater Houston
Psychiatric Associates
About GHPA
Greater Houston Psychiatric Associates has been serving the Houston community since 2001, providing trusted mental health care for more than 25 years. Our practice was founded on the belief that every individual deserves compassionate, personalized support, and we remain committed to delivering patient-centered care for children, adolescents, and adults. With a long-standing reputation for clinical excellence, our team is dedicated to helping patients navigate life’s challenges and achieve lasting emotional wellness.
Our Services
Greater Houston Psychiatric Associates offers comprehensive mental health services designed to support children, adolescents, and adults through every stage of life. Our team provides personalized, patient-centered care with treatment plans tailored to each individual’s unique needs, goals, and path toward wellness.
Spravato® Therapy
SPRAVATO® is the first FDA-approved nasal spray medication, taken with an oral antidepressant, for Adults with treatment-resistant depression (TRD) Depressive symptoms in adults with major depressive disorder (MDD) with suicidal thoughts or actions.
Intensive Outpatient Program
Greater Houston Psychiatric Associates offers a Physician Directed Intensive Outpatient Program (PD-IOP) at three locations. The PD-IOP is designed for patients with significant stress, anxiety, or depression whose needs cannot be met by traditional outpatient psychotherapy and medication management.
Treatment Resistant Depression
Various modalities of treatment can be useful for patients experiencing Treatment Resistant Depression (TRD). Those offered at Greater Houston Psychiatric Associates include Transcranial Magnetic Stimulation (TMS) and SPRAVATO®/esketamine intranasal spray. If indicated, Electroconvulsive Therapy (ECT) may be provided by one of our physicians at a local behavioral health hospital.
Areas of Clinical Expertise
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Call to schedule a consultation.
Our Providers
At Greater Houston Psychiatric Associates, our providers are dedicated to delivering compassionate, high-quality mental health care rooted in trust, respect, and clinical excellence. With extensive experience treating children, adolescents, and adults, our team takes a personalized approach to care, working closely with each patient to understand their unique concerns, goals, and treatment needs.
We believe meaningful mental health care begins with strong provider-patient relationships. Our psychiatrists, nurse practitioners, and therapists are committed to creating a supportive environment where patients feel heard, valued, and empowered throughout their journey toward improved emotional health and overall well-being.
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Why Choose GHPA?
Choose Greater Houston Psychiatric Associates for compassionate, patient-centered mental health care from an experienced team dedicated to providing personalized treatment and helping each patient achieve lasting wellness.
Compassionate and Skilled Staff
Tailored Care Plans
Health and Wellness
Safe and Comfortable Environment
Family Involvement
Our Locations
Greater Houston Psychiatric Associates offers convenient access to compassionate mental health care through multiple convenient Houston-area locations designed to better serve our patients and their families. Each location provides a welcoming, supportive environment where individuals can receive personalized psychiatric and behavioral health services close to home. Our dedicated team is committed to making quality, patient-centered care accessible throughout the Greater Houston community.
San Felipe
GHPA – San Felipe
5151 San Felipe, Suite 1470
Houston, TX 77056
713-622-4499
713-622-3466
West Houston
GHPA – Wilcrest
2901 Wilcrest Drive, Suite 520
Houston, TX 77042
713-400-7400
713-974-0870
Loop Central
GHPA – Loop Central
4888 Loop Central Drive, Suite 510
Houston, TX 77081
713-346-1551
713-346-1577
South East Houston
GHPA – Fuquay
11550 Fuqua Street, Suite 560
Houston, TX 77034
281-922-7333
281-922-7369
SAN FELIPE OFFICE
5151 San Felipe, Suite 1470
Houston, TX 77056
Phone: 713-622-4499
Fax: 713-622-3466
*Free garage parking is available.
CLINICIANS
Hong Chai, MD, PhD
Robert P. McKenzie, MD
Diana P. Nakad-Rodriguez, MD
George D. Santos, MD
Nhu Mai Vu, DO
WILCREST OFFICE
2901 Wilcrest Drive, Suite 520
Houston, TX 77042
Phone: 713-400-7400
Fax: 713-974-0870
*Free surface parking is available.
CLINICIANS
Sonam Bhakta, MD
Gisela Esteva, PhD, LPC, NCC
Daniel Liaou, MD
Marisa Suppatkul, MD
Harry Mergel, LPC, LMFT, CEAP
Brent LoCaste-Wilken, LCSW
LOOP CENTRAL OFFICE
4888 Loop Central Drive, Suite 510
Houston, TX 77081
Phone: 713-346-1551
Fax: 713-346-1577
*Enter the parking garage between the Loop Central One building and Candlewood Suites. Proceed straight into the garage and up the ramp to your right for visitor parking. Bring your parking ticket to the office for validation.
CLINICIANS
Eric Chen, MD
Nilgun Giray, MD
Shaojie Han, MD
John E. Marcellus, MD
Robert L. Woodham, MD
Oladayo Bello, APRN-CNP
Kris Choi, MS, LPC
Stella Edmondson, LCSW
Jennifer Enrri, LCSW, LCDC, LCADC
Tom Leffler, MEd, LPC
Monica Mehalshick, LCSW
FUQUA OFFICE
11550 Fuqua Street, Suite 560
Houston, TX 77034
Phone: 281-922-7333
Fax: 281-922-7369
*Free surface parking is available.
CLINICIANS
Vatsala Bhaskaran, MD
Michael Miller, MD
James A. Nelson, MD
Tu-Lan Nguyen, MD
Heather Sauer, MD
Deborah Arnold, LCSW
Jamie Budd, LCSW
Nicholas LaRocca, LPC
Get the Care You Need
At Greater Houston Psychiatric Associates, we provide compassionate, personalized mental health care to help you navigate life’s challenges and take meaningful steps toward improved emotional health and well-being.
“You don’t have to see the whole staircase, just take the first step.”
– Martin Luther King Jr.
Why Choose GHPA
Mental Healthcare for Everyone
At Greater Houston Psychiatric Associates, we believe compassionate mental health care should be accessible to everyone.
A Team of Experienced Healthcare Professionals
Our team of experienced mental health professionals is dedicated to providing compassionate, evidence-based care in a supportive and collaborative environment.
Patient-Centered Care with Personalized Attention
Our providers take the time to listen, understand, and develop personalized treatment plans that support each person’s journey toward improved mental health and lasting wellness.
Empowering You to Achieve Your Best Mental Healt
Through compassionate guidance and evidence-based treatment, we help individuals build resilience, improve well-being, and move toward a healthier, more fulfilling life.

"You are not a drop in the ocean. You are the entire ocean in a drop."
– Rumi
GHPA Is Committed To Providing The Best Mental Health Care
Greater Houston Psychiatric Associates is committed to providing exceptional, patient-centered mental health care through compassionate support, personalized treatment, and clinical excellence.


