Board-Certified Psychiatrists | STMHA Medical Directors
Board-Certified Psychiatrists · Accepting New Patients

Meet Our Medical Directors

South Texas Mental Health Associates is led by two board-certified psychiatrists credentialed through the American Board of Psychiatry and Neurology, the gold standard in psychiatric medicine. Dr. John Lusins III and Dr. Megan Talley oversee clinical standards across all three STMHA locations in San Antonio, Corpus Christi, and Edinburg.

Become a Patient Our Locations ↓
ABPN Board Certified 3 Clinic Locations Tricare & Medicare Accepted Telehealth Statewide
Board-Certified Psychiatrists
ABPN Credentialed • Residency Trained
Medicare & Tricare Accepted
3 Clinic Locations
Our Physicians

Psychiatric Leadership You Can Trust

Every patient at South Texas Mental Health Associates receives care guided by our medical directors, board-certified psychiatrists committed to compassionate, evidence-based psychiatric treatment across South Texas.

Dr. John Lusins III, MD, Board-Certified Psychiatrist and Medical Director, South Texas Mental Health Associates
Medical Director
John Lusins III, MD M.D. · Board-Certified Psychiatrist
MD ABPN Certified Forensic Psychiatry Top Doctor — The Bend

Dr. John Lusins III is a board-certified psychiatrist and Medical Director at South Texas Mental Health Associates. He completed his residency in psychiatry and a fellowship in forensic psychiatry at West Virginia University, bringing advanced clinical expertise to each patient encounter. Recognized as a Top Doctor by The Bend and named Medical Director of Esperanza de Tejas, Dr. Lusins is deeply committed to expanding access to quality psychiatric care throughout South Texas.

Dr. Lusins specializes in the diagnosis and comprehensive treatment of mood disorders, anxiety, PTSD, and complex psychiatric conditions. He oversees clinical standards across all three STMHA locations, ensuring every provider adheres to the highest benchmarks of evidence-based practice.

Areas of Expertise
Depression Treatment Anxiety Disorders PTSD & Trauma Bipolar Disorder Medication Management Veterans Mental Health Forensic Psychiatry
San Antonio • Corpus Christi • Edinburg
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Dr. Megan Talley, MD, Board-Certified Psychiatrist and Medical Director, South Texas Mental Health Associates
Medical Director
Megan Talley, MD M.D. · Board-Certified Psychiatrist
MD ABPN Certified Clinical Director & Founder KRIS 6 Featured

Dr. Megan Talley is a board-certified psychiatrist, Clinical Director, and founder of South Texas Mental Health Associates. Featured on KRIS 6 News for bringing world-class psychiatric care back to the Coastal Bend, and recognized as a Top Doctor by The Bend, Dr. Talley built STMHA with a mission to make compassionate, evidence-based psychiatric care accessible across South Texas.

Dr. Talley specializes in evidence-based medication management and trauma-informed psychiatric care. She collaborates directly with STMHA’s licensed therapists to deliver integrated treatment plans that span medication optimization, psychotherapy, and advanced treatments.

Areas of Expertise
Medication Management Trauma-Informed Care Anxiety Disorders ADHD Bipolar Disorder Women’s Mental Health Integrated Psychiatry
San Antonio • Corpus Christi • Edinburg
View Full Profile →
Why Our Credentials Matter

Why Board Certification Matters for Your Care

When choosing a psychiatrist, board certification is one of the most reliable indicators of clinical training, accountability, and commitment to the field.

Rigorous National Examination

ABPN board certification requires passing comprehensive written and clinical examinations that verify mastery of psychiatric diagnosis, pharmacology, and treatment standards across the full spectrum of mental health conditions.

Accredited Residency Training

Board-certified psychiatrists complete a four-year, ACGME-accredited residency after medical school, with thousands of hours of supervised clinical experience across the full range of psychiatric presentations.

Ongoing Continuing Education

Certification is maintained through continuing medical education, ensuring our medical directors stay current with evolving research, new treatment modalities, and the latest psychiatric guidelines including TMS therapy and evidence-based psychopharmacology.

Direct Physician Oversight

As medical directors, Dr. Lusins and Dr. Talley set the standards for diagnosis, treatment planning, and quality of care that every patient receives across all STMHA providers at all three locations.

Evidence-Based Treatment

STMHA’s medical directors integrate psychiatric medication management with psychotherapy including CBT, DBT, EMDR, and CPT. Every treatment plan is individualized to each patient’s diagnosis, history, and goals, including advanced options like TMS therapy.

Patient-First Compassion

Both Dr. Lusins and Dr. Talley take the time to truly listen: explaining diagnoses clearly, involving patients in treatment decisions, and building the trust that effective long-term psychiatric care requires.

What We Offer

Comprehensive Mental Health Services Across South Texas

Our board-certified psychiatrists and licensed therapists offer a full spectrum of evidence-based mental health services at all three locations. Some specialty services are available exclusively at specific clinics.

Medication Management Expert prescribing and ongoing monitoring for depression, anxiety, bipolar disorder, ADHD, PTSD, and more at all three locations. Learn more → EMDR Therapy Evidence-based trauma reprocessing recognized by the APA, WHO, and VA as a frontline PTSD treatment. Available at all three locations. Learn more → PTSD & Trauma Treatment Specialized trauma therapy including EMDR, CPT, CBT, and medication management. Tricare accepted. Veterans welcome at all locations. Learn more → ADHD Evaluation & Treatment Comprehensive diagnostic assessment and stimulant or non-stimulant medication management for adults and adolescents across all locations. Learn more → Veterans Mental Health Compassionate psychiatric care for veterans, active-duty service members, and military families. Tricare accepted. No VA referral required. Learn more → Bipolar Disorder Treatment Precision medication management with mood stabilizers and ongoing psychiatric monitoring for Bipolar I, II, and cyclothymia across all locations. Learn more → Individual Psychotherapy One-on-one therapy using CBT, DBT, EMDR, and other evidence-based modalities for anxiety, depression, trauma, and more. Available at all locations. Learn more → Group Psychotherapy Structured group therapy offering peer support and skill-building for depression, anxiety, PTSD, and more. Currently available in Edinburg. Learn more → TMS Therapy CC Only FDA-cleared, non-invasive transcranial magnetic stimulation for treatment-resistant depression. Covered by most insurance. Available exclusively in Corpus Christi. Learn more → Intensive Outpatient Program Coming Soon to Edinburg Structured IOP for depression, anxiety, PTSD, and bipolar disorder. The only IOP in the STMHA network, serving McAllen and the RGV. Learn more → Couples Therapy SA Only EFT and Gottman Method couples and marriage counseling for married, engaged, and unmarried partners. Available exclusively in San Antonio. Learn more → Telehealth Psychiatry Secure, HIPAA-compliant video appointments for medication management, therapy follow-ups, and psychiatric consultations. Available statewide across Texas. Learn more →
Our Clinics

Three Locations Across South Texas

Board-certified psychiatric care close to home, or from the comfort of your home via telehealth. Each location offers a full range of services, with select specialty treatments available at specific clinics.

San Antonio
Bexar County • NW Military Hwy

2161 NW Military Hwy, Suite 114
San Antonio, TX 78213
Mon – Fri • 8:00 AM – 5:00 PM

Services at this location
Medication Management EMDR Therapy PTSD Treatment ADHD DBT Therapy Veterans Care Bipolar Disorder Couples Therapy ★ SA Only Telehealth
View San Antonio Clinic → (210) 468-7099
Corpus Christi
Coastal Bend • South Padre Island Drive

1321 Glenoak Dr.
Corpus Christi, TX 78418
Mon – Fri • 8:00 AM – 5:00 PM

Services at this location
Medication Management EMDR Therapy PTSD Treatment ADHD DBT Therapy Veterans Care Bipolar Disorder TMS Therapy ★ CC Only Telehealth
View Corpus Christi Clinic → (361) 356-1234
Edinburg & RGV
Rio Grande Valley • 15 Min from McAllen

3120 Center Pointe Dr.
Edinburg, TX 78539
Mon – Fri • 8:00 AM – 5:00 PM

Services at this location
Medication Management EMDR Therapy PTSD Treatment ADHD Veterans Care Bipolar Disorder Group Therapy IOP ★ Edinburg Only Telehealth
View Edinburg Clinic → (956) 329-2654

Telehealth Psychiatry: Available Statewide Across Texas

Can’t make it to a clinic? Our HIPAA-compliant telehealth services are covered by most insurance plans including Medicare and Tricare. Available to patients throughout Texas, from Stone Oak to Brownsville, Laredo to Houston. No special software required.

Schedule Telehealth
Frequently Asked Questions

Your Questions Answered

Have a question that isn’t answered here? Call any of our three locations or complete the Become a Patient form and our team will be happy to help.

Both Dr. John Lusins III and Dr. Megan Talley are board-certified psychiatrists credentialed through the American Board of Psychiatry and Neurology (ABPN). Board certification requires completing an accredited residency program, passing rigorous national examinations, and maintaining ongoing continuing medical education. It represents the highest professional standard in psychiatry.
STMHA’s board-certified psychiatrists treat a full range of mental health conditions including depression, anxiety disorders, PTSD and trauma, bipolar disorder, ADHD, and more. Treatment options include medication management, TMS therapy for treatment-resistant depression (Corpus Christi only), EMDR therapy, Intensive Outpatient Program (Edinburg), couples therapy (San Antonio), and telehealth psychiatry available throughout Texas.
A psychiatrist is a medical doctor who can diagnose mental health conditions, prescribe medications, and provide psychiatric evaluations. A therapist provides talk therapy and behavioral interventions but typically cannot prescribe medication. STMHA has both psychiatrists and licensed therapists who collaborate on the same patient’s care, giving you the full benefit of an integrated treatment approach.
No referral is required. Complete the Become a Patient intake form at stmha.com or call any of our three locations directly: San Antonio (210) 468-7099, Corpus Christi (361) 356-1234, or Edinburg (956) 329-2654. Our intake team verifies your insurance and schedules your first appointment. Telehealth appointments are also available throughout Texas.
South Texas Mental Health Associates accepts most major insurance plans, including Medicare, Tricare, Aetna, Cigna, Blue Cross Blue Shield, and United Healthcare at all three locations. Our team handles insurance verification and prior authorization before your first appointment so you can focus on your care.

Ready to Take the Next Step Toward Mental Wellness?

Contact South Texas Mental Health Associates today to schedule an appointment with one of our board-certified psychiatrists at our San Antonio, Corpus Christi, or Edinburg locations, or schedule a telehealth visit from anywhere in Texas.

San Antonio (210) 468-7099 Corpus Christi (361) 356-1234 Edinburg & RGV (956) 329-2654
Become a Patient Today →