Shubhada Reddy, MD

Gary Etter, MD is a board-certified psychiatrist with experience across outpatient, inpatient, and emergency settings, including many years within the John Peter Smith Healthcare System. He has also practiced in federal correctional psychiatric settings and outpatient care through Tarrant County MHMR. Dr. Etter has been extensively involved in psychiatric education for medical students and psychiatry residents. He has participated in organized psychiatry for many years through the Texas Society of Psychiatric Physicians, serving on multiple committees and previously as President of the Texas Psychiatric Society. He earned his medical degree from the University of Texas Medical Branch in Galveston and completed his psychiatry residency at Timberlawn Psychiatric Hospital in Dallas. He is a Distinguished Life Fellow of the American Psychiatric Association.

Dr. Etter values ongoing patient input and strives to create a collaborative treatment environment where patients are actively involved in decision-making. He emphasizes a warm, supportive approach that helps patients feel heard, respected, and understood throughout their care.

Dr. Etter begins by developing a thorough understanding of each patient’s psychiatric, medical, family, developmental, and substance use history, while also exploring the patient’s concerns and goals. He then works collaboratively with the patient to develop an individualized treatment plan tailored to their unique needs and objectives.

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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Dr. Caleb Cheatham is a board-certified psychiatrist who completed his undergraduate studies at Stetson University in DeLand, FL, before earning his medical degree and completing his psychiatry residency at the University of Tennessee Health Science Center in Memphis, TN. He brings a strong foundation in psychopharmacology and a deep commitment to person-centered care.

Dr. Cheatham takes an open, nonjudgmental approach and strives to create a safe space for patients to share vulnerably. He believes in leading with compassion and listening as a core tool for understanding. His treatment philosophy is integrative—combining thoughtful medication management with supportive, individualized therapy—and he encourages patients to consider the role of lifestyle factors like sleep, nutrition, and exercise.

Dr. Cheatham begins with a conversational consultation focused on understanding each patient’s story and needs. Together, they co-create a personalized treatment plan grounded in the patient’s values. He emphasizes clear communication and routinely revisits treatment goals to ensure alignment, progress, and ongoing support.

Dr. Scott Masters is a Board-Certified psychiatrist and psychoanalyst with over 30 years' experience in medication management and therapy. He is living in Hawaii after a 20-year training and working in New York City.

Columbia University Vagelos College of Physicians and Surgeons

Columbia University Psychiatry Residency Program, Chief Resident

Columbia University Public Psychiatry Fellowship

Columbia University Center for Psychoanalytic Training and Research

Dr. Masters offers an integration of medication management and various psychotherapy. He is certified in supportive psychotherapy, prolonged exposure therapy for PTSD, motivational interviewing, CBT for chronic pain, Integrated Behavioral Couples Therapy and Whole Health.  With the right combination of treatments, patients can achieve their potential and relieve suffering.

In an initial visit, patients can expect a thorough, collaborative discussion with shared decision making to understand their symptoms, life goals, and clinical needs. Dr. Masters will evaluate the patient's condition to determine appropriate medication interventions and discuss personalized treatment recommendations including integrated psychotherapy.  Typical follow-up visits are approximately 20-30 minutes in length. Depending on the severity and complexity of a patient's situation, referrals to additional counseling or therapy may also be suggested.

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Dr. Ernesto Gonzalez is a board certified adult psychiatrist. He completed his undergraduate training at Yale University and received his medical degree from the University of Pennsylvania School of Medicine. He completed his residency training at the Cambridge Health Alliance/Harvard Medical School Adult Psychiatry Training Program. Dr. Gonzalez prefers a holistic approach that takes the time to know the whole patient, incorporating biological, psychological, social, and cultural perspectives in crafting a comprehensive, individualized, treatment plan. He practices medication management combined with supportive therapy, typically delivered within 30 minute sessions. Elements of psychodynamic, dialectical behavior and cognitive-behavioral therapy will also be incorporated into sessions based on a patient's individual needs. If additional therapy is needed, Dr. Gonzalez will recommend the addition of an individual therapist to the patient's treatment team. Having dedicated his career to adult outpatient psychiatry, Dr. Gonzalez has worked with patients from a wide range of ages, cultures, ethnicities, and social settings across the New York City area. His primary focus is working with patients with depression, anxiety, ADHD, and PTSD. He also values working with people adjusting to changes in their lives, whether it be grieving the loss of a loved one, changes in employment, relationships, or adjusting to changes that come with age. Prior to joining Talkiatry, Dr. Gonzalez was an Assistant Professor at the NYU Grossman School of Medicine and served as Director of the Adult Outpatient Psychiatric Department, Assertive Community Treatment (ACT) Team, and Collaborative Care Departments at Woodhull Hospital in Brooklyn, New York. He also had a small practice near his home. Dr. Gonzalez has also had a lifelong interest in meeting new people and experiencing different cultures. This interest has taken him as far away as the townships of Cape Town, South Africa and as close as his local diner, and it edifies the work he does with patients.

Dr. Lanier Summerall attended Yale University, where she studied philosophy in the Great Books Program. She later studied Molecular Biology at the University of Colorado, where she and her husband moved after getting married. She received her medical degree from the University of Colorado Health Sciences Program, and completed her residency at Dartmouth Medical School. She also trained at Massachusetts General Hospital with Dr. Theodore Stern in his area of expertise (Consult Psychiatry) and learned from his immense skill at building strong rapport with all patients.

Dr. Summerall has experience in inpatient, and outpatient settings, along with teaching and research. She has worked in hospital administration, government entities, most importantly the Senate Veterans’ Affairs Committee.

Dr. Summerall values transparent communication and will work with you to create the change. She treats patients as unique individuals and treatment is put into place with individualized plans in mind. Her approach to patients, which emphasizes holistic, patient centered, strength based treatment built on a foundation of strong doctor-patient alliance and evidence based medical knowledge.

Your appointment with Dr. Summerall will be a conversation. She is there to work towards goals together and is a good translator of "medical-ese". She enjoys working with patients on all aspects of their health and caters treatment plans to you.