Nereida Gonzalez-Berrios, MD

Xavier Diao, MD (he/him) is a board-certified psychiatrist. He earned his undergraduate degrees in Psychology and Biological Sciences at the University of Maryland, where he also obtained his medical degree. Dr. Diao completed his psychiatry residency at the Icahn School of Medicine at Mount Sinai, received additional training in child and adolescent psychiatry at Columbia and Cornell, and finished a psychoanalytic fellowship at the New York Psychoanalytic Society & Institute. Prior to joining Talkiatry, he was an Assistant Professor of Clinical Psychiatry at the University of Pennsylvania, where he provided clinical care and teaching along the undergraduate-graduate medical education continuum.

Dr. Diao's therapeutic orientation is informed by psychodynamic, cognitive behavioral, and dialectical behavior modalities. He has expertise in the treatment of a diverse range of mental health conditions, including depression, anxiety, OCD, and PTSD. Dr. Diao uses a developmentally informed and LGBTQ-affirmative approach in his practice, with the aim of enriching meaning and alleviating suffering in the domains of work, play, and love.

Dr. Diao begins each encounter with gentle curiosity, inviting patients to share their stories without fear of judgment. Together, he crafts an individualized treatment plan with the patient that may include medication, psychotherapy, and/or referrals to subspecialty care, always in close collaboration with other members on the treatment team.

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Dr. Saisha Jackson is a board-certified psychiatrist in Adult Psychiatry. She completed her undergraduate training at Hampton University followed by medical school at Michigan State University College of Human Medicine. She has completed a Residency in Psychiatry at Howard University.

She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, bipolar disorders, post-traumatic stress disorders and obsessive compulsive and related disorders. She specializes in psychopharmacology. Her practice focuses on medication management, and typically offers this in conjunction with supportive therapy in 30-minute follow-up visits.

Do you feel lost, stuck or overwhelmed? Maybe you feel like you are just going through the motions. Ann-Marie helps people over the age of 13 who are experiencing depression, anxiety, stress, and unexpected life changes. She enjoy working with adolescents and adults including members of the LGBTQIA+ community who are motivated to enhance their mental health and be the best versions of themselves.

Together, we will build a therapeutic relationship in a trusting, non judgmental environment. She encourages clients to be involved in their treatment plans and goals to help give them the tools they need to improve their mental health.

Ann-Marie uses different evidence-based treatment modalities to help you be successful in your mental health journey. She uses a personalized treatment approach tailored to your unique needs.

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Background and credentials

Dr. Sinner is board-certified in Psychiatry. He completed his psychiatry residency training at Dartmouth-Hitchcock Medical Center. With over 14 years of experience, he has worked in a variety of settings, including five years in inpatient psychiatry in Vermont, where he served as Medical Director for a state hospital psychiatric unit and taught medical students. He then spent five years working in an outpatient community mental health center in Pennsylvania before transitioning to telepsychiatry, providing care to individuals in Pennsylvania, Florida, and New York.

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Treatment approach

Dr. Sinner employs a collaborative, patient-centered approach, tailoring treatment plans to meet each individual's specific needs. His practice integrates pharmacotherapy with cognitive behavioral therapy (CBT) and supportive therapy as needed. He specializes in treating a wide range of psychiatric conditions, including depression, bipolar disorder, anxiety, ADHD, neuropsychiatric disorders, developmental disorders, and personality disorders. His philosophy is to provide personalized care that makes a meaningful impact at different stages of a patient’s life.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation focused on understanding their mental health concerns, history, and treatment goals. Dr. Sinner takes a compassionate and collaborative approach, working closely with patients to create individualized treatment plans. He ensures that each patient receives a balanced and effective combination of medication management and therapeutic interventions suited to their unique needs.

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Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

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Dr. Tara Thompson-Felix is a board-certified child, adolescent and adult psychiatrist. Dr. Thompson-Felix has specialized training in perinatal mental health and believes that improving outcomes during pregnancy and the postpartum period has a long-lasting impact on outcomes for a mother and child. She also specializes in treating a wide array of psychiatric conditions affecting children, adolescents, and young adults. Dr. Thompson-Felix's journey into medicine started in her undergraduate studies at Rutgers University. She earned her medical degree at Rutgers, Robert Wood Johnson Medical School and trained in adult psychiatry at Temple University Medical School. She completed her child and adolescent psychiatry fellowship at Yale School of Medicine. In addition to her clinical work, Dr. Thompson-Felix has extensive research experience in using neuroscience to understand the impact of maternal mental health on child development. She has authored several publications, presents her work nationally/internationally, and received numerous awards for her clinical work, research, and passion for teaching. Dr. Thompson-Felix believes that trust, communication, and respect between a patient and their physician is the foundation of effective treatment. Her style is welcoming, nonjudgmental, and collaborative. She evaluates mental health based on biological, psychological, and cultural aspects. She uses evidence-based treatments to manage psychiatric symptoms and promote optimal health.

Edmund Clark, MD, serves as Chief Psychiatrist at Talkiatry with over 17 years of board-certified experience, including more than 5 years delivering tele-psychiatric care to underserved areas. His career spans 23 years in public service, including leadership roles as Chief of the VA Mental Health Clinics in Jacksonville, FL, and program manager for the University of Florida’s Psychiatry Residency Training Program. A former U.S. Navy psychiatrist, he deployed multiple times, including to Iraq in support of an Army Combat Stress Control clinic, gaining expertise in evidence-based PTSD treatments. Dr. Clark earned his medical degree from the University of Florida and completed his psychiatry residency at the National Naval Medical Center and Walter Reed, serving as chief resident for over 50 military trainees. Before medicine, he served in the U.S. Peace Corps in Kenya.

Dr. Clark values a collaborative approach built on honesty, rapport, and ensuring patients feel heard. He helps patients identify and address multiple factors influencing their mental health, aiming for positive, lasting changes that improve function across life domains. He encourages evidence-based therapies and, when needed, involves other providers to support comprehensive care.

Dr. Clark uses measurement-based tools to assess medication efficacy and guide treatment decisions. He integrates supportive psychotherapy to strengthen coping skills and reduce negative thinking, while incorporating motivational interviewing techniques to promote recovery and self-improvement.