Mayra Cabrera Dean, MD

Dr. Vitaly Chernish is a board-certified psychiatrist. He earned his medical degree from the University of Tennessee Health Science Center, where he also completed his psychiatry residency training. Following residency, he relocated to New York City and worked at NewYork-Presbyterian Brooklyn Methodist Hospital. He also held an academic appointment as Assistant Professor of Clinical Psychiatry at Weill Cornell Medical College. Dr. Chernish specializes in the treatment of anxiety disorders, depression, bipolar disorder, post-traumatic stress disorder (PTSD), and obsessive-compulsive disorder (OCD).

Dr. Chernish strives to create a therapeutic environment that balances empathy and compassion with structure and clinical clarity. Patients can expect a thoughtful, respectful approach that prioritizes understanding their concerns while providing clear guidance and evidence-based recommendations.

Initial visits involve a comprehensive evaluation of psychiatric, medical, and psychosocial history, current symptoms, and medication use to ensure care is individualized and appropriate. Dr. Chernish emphasizes collaborative, multidisciplinary treatment and regularly coordinates care with primary care physicians, specialists, and therapists when clinically indicated.

Dr. Khandie Graham is a board-certified psychiatrist who completed her medical training at UCLA/Drew Medical Education and her psychiatry training at University of California, San Francisco/Fresno in 2013. She has served as a psychiatrist in the United States Air Force and prior to joining Talkiatry, was an inpatient psychiatrist. Dr. Graham's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow-up visits. However, occasionally Dr. Graham may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Graham treats all adults and specializes in depression, bipolar disorder, anxiety disorders, ADHD, and life changes. She prides herself in partnering with patients to create individualized treatment plans. Dr. Graham is a great listener and spends time with her patients.

Dr. Mark Varela is a board-certified psychiatrist joining Talkiatry directly out of residency. He focuses primarily on medication management, often accompanied by brief cognitive, motivational, or supportive therapy. He may request that you also meet with a therapist regularly for your benefit. Dr. Varela received his medical degree and general psychiatric residency training both from Texas Tech University Health Sciences Center in West Texas. He treats young adults and adults with a wide variety of mental health concerns, including ADHD, mood disorders, anxiety, OCD, and PTSD.

Dr. Zeynep Altun is board-certified in Psychiatry and holds a Ph.D. in Neuroscience. Dr. Altun graduated cum laude from Istanbul University, Istanbul Medical School. She completed her residency training in Neurology and is Turkish board-certified in clinical Neurology. Subsequently, she moved to the U.S. and finished her Ph.D. in cellular Neuroscience at Cornell University Graduate School of Medical Sciences. Dr. Altun completed her psychiatry residency training at Albert Einstein College of Medicine, Department of Psychiatry and after, her clinical fellowship in Comprehensive Psychiatric Emergency Program at Columbia University Medical College, New York Presbyterian Hospital. Dr. Altun has practiced in various settings including Bellevue Hospital, New York Presbyterian Hospital, Columbia Doctors Faculty Practice Office, Mount Sinai West and Mount Sinai Morningside Hospitals. Dr. Altun has held various academic appointments at New York University School of Medicine Department of Psychiatry; New York Presbyterian Hospital-Columbia University Medical College Department of Psychiatry; New York State Psychiatric Institute and Mount Sinai School of Medicine Department of Psychiatry. She spent most of her professional career supervising and teaching medical students, psychiatry residents and nurse practitioners. As an adult psychiatrist, Dr. Altun has extensive theoretical knowledge of the nervous system and its disorders and more than 10 years of experience in treating various mental illnesses including mood disorders, anxiety disorders, psychotic disorders, autism-spectrum and neuropsychiatric disorders, psychiatric emergencies and crisis management as well as cognitive behavioral and supportive psychotherapy. In Columbia Doctors, she collaborated closely with the Lieber Recovery Clinic, treating young adults with various mental illnesses. The philosophy of her practice is to collaborate with patients and work together with them so that they can lead symptom-free, productive, and stable lives.

Dr. Peter Hsieh has experience practicing in both outpatient and inpatient psychiatric settings. He earned his medical degree from the Zucker School of Medicine at Hofstra/Northwell and completed his psychiatry residency at Zucker SOM at Mather Hospital.

Dr. Hsieh values patient education and shared decision-making. He fosters a nonjudgmental environment where patients feel heard and supported, working collaboratively to develop a treatment plan that fits their goals and needs.

Dr. Hsieh begins with a comprehensive psychiatric evaluation and partners with each patient to create an individualized treatment plan that aligns with their values and evidence-based care. His approach often combines medication management with psychotherapeutic modalities.

Dr. Caitlin Meyer is a board-certified in adult psychiatry with experience in a wide variety of psychiatric disorders including depression, anxiety, women's mental health, and ADHD. Dr. Meyer's practice is focused on medication management with supportive therapy offered in 30-minute follow-up visits. Dr. Meyer received her medical degree from the University of Texas Southwestern Medical Center in Dallas, Texas, where she received the North Texas Society of Psychiatric Physicians' Award for outstanding medical student in Psychiatry. She pursued her residency in adult psychiatry at Brown University in Providence, Rhode Island, with particular interest and training in child, adolescent, and young adult Psychiatry. After completing training, Dr. Meyer worked with children and adults in a variety of treatment settings including Community Mental Health Centers and hospitals, providing inpatient, residential and outpatient services. Prior to joining the Talkiatry team, Dr. Meyer participated in psychiatric research developing new treatment methods for complex psychiatric disorders. Dr. Meyer enjoys treating patients across the lifespan from young adulthood through senior care. She sees each patient as a unique individual and works together with her patients to develop a treatment plan specific to their needs and goals.