Fang Yang, MD

Thomas Sargent, MD, holds a master's degree in pharmacology and a Doctor of Medicine from Tulane University School of Medicine. He completed his psychiatry residency at the Icahn School of Medicine at Mount Sinai West/Morningside in New York City. Over the past four years, he has treated a wide range of mental health conditions in various clinical settings. Dr. Sargent has extensive experience treating mood, anxiety and psychotic disorders, PTSD, OCD, personality disorders, and substance use issues. He utilizes both medication management and psychotherapy to provide comprehensive care. Dr. Sargent has received specialized training at the VA and the Center for Intensive Treatment of Personality Disorders in NYC. Passionate about holistic treatment, Dr. Sargent considers the biological, psychological, and social factors that influence mental health. He believes in addressing core issues through targeted care rather than defaulting to prescribing multiple medications. Dr. Sargent strives to create a supportive environment where patients can openly express their concerns. He believes in shared decision-making to ensure that care is evidence-based but also tailored to each patient's unique needs. Dr. Sargent takes the time to thoroughly explain diagnoses and treatment options, empowering patients to make informed decisions about their mental health. His approach emphasizes patient autonomy and aims to build trust, leading to more effective and personalized care outcomes.

Dr. Luis Espinosa holds the position of adult psychiatrist with Talkiatry. His practice focuses on medication management, and typically offers this in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Espinosa’s approach is holistic. Each patient’s care is driven by their unique goals and values, whether they suffer from depression, anxiety, trauma, and stress related, or obsessive-compulsive disorders.

Dr. Espinosa believes in serving patients by combining therapy with medication to provide an experience that is both therapeutic and informative and allows patients to guide their own outcomes in a supportive space.  

Dr. Espinosa completed his undergraduate studies in philosophy at the University of Florida as the 2013 Ellen Haring Award winner. He was then honored as a Docherty Foundation Scholar to attend the University of South Florida Morsani College of Medicine. He pursued his specialty training in psychiatry at Kaiser Permanente Northern California.

Dr. Espinosa believes in a treatment modality that combines wellness of mind and body to help individuals who are suffering achieve their potential.

Background and credentials

Dr. Jenny Joseph is a board-certified adult psychiatrist. She earned her medical degree from St. George's University School of Medicine and completed her adult psychiatry residency at New York Medical College at Metropolitan Hospital Center. She has experience working with diverse patient populations and treating a range of psychiatric conditions.

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Treatment approach

Dr. Joseph specializes in medication management for various psychiatric conditions, including mood, anxiety, and psychotic disorders. She employs a patient-centered approach that emphasizes empathy, open communication, and collaboration. In addition to pharmacological treatment, she incorporates psychoeducation and supportive therapy to help patients better understand and manage their conditions. When beneficial, she may recommend additional therapy and coordinate care with a therapist to ensure comprehensive treatment.

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What you can expect in a first visit

During the first visit, patients can expect a thorough evaluation that explores their symptoms, treatment history, and personal goals. Dr. Joseph takes the time to listen and understand each patient's needs, ensuring that their treatment plan is tailored to their specific concerns. She provides a compassionate and structured approach to medication management while fostering a collaborative environment where patients feel supported in their mental health journey.

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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. Tetyana Tarnavsky is a board-certified psychiatrist trained in Adult Psychiatry. She attended Dnipropetrovsk State Medical Academy in Ukraine where she received her M.D., M.S. and Ph.D. degrees in Psychiatry. Dr. Tarnavsky completed her residency at Harvard South Shore Psychiatry Residency Training Program in MA, where she was elected chief resident. Dr. Tarnavsky has an extensive research experience in Ukraine and the USA. She had studied computer addiction for her dissertation; had multiple abstracts and presentations; published several articles in peer-reviewed psychiatric journals as well as a book entitled Computer Addiction: Formation, Diagnosis, Correction and Prophylaxis. She has helped organize international conferences with the goal of improving access to and quality of healthcare in Dnipropetrovsk, Ukraine, and providing a national model for health care reform. Dr. Tarnavsky has worked with a variety of patients with diverse backgrounds in a Community Health Center and in the Partial Hospitalization Program as well as supervised medical students, psychiatry residents, and nurse practitioners. She has been a lecturer on psychiatry at Harvard Medical School and was involved in the training of psychiatry residents in the Harvard South Shore Psychiatry Training Program. Her primary focus has been on treating adults with depression, anxiety, post traumatic stress disorder, adjustment disorder, ADHD and other disorders. Dr. Tarnavsky strives to provide quality and compassionate treatment to individuals and their families.‍

Dr. Wasser is a staff psychiatrist at Talkiatry, dedicated to providing compassionate and effective care through telepsychiatry. He completed his undergraduate studies at Moravian College in Bethlehem, Pennsylvania, where he focused on Neuroscience and Pre-Medical studies. Subsequently, he pursued his medical degree at Rocky Vista University in Parker, Colorado before completing his psychiatry residency at HCA Aurora in Aurora, Colorado. Dr. Wasser was the recipient of the Chairman's Crystal Distinction of Excellence Award, rewarding a resident's exemplary performance and endorsing a resident's future success in the field of psychiatry. With a strong foundation in both neuroscience and psychiatry, Dr. Wasser approaches each patient with a deep understanding of the mind-body connection and the complexities of mental health. When Dr. Wasser is not providing professional care, he is an advocate for personal health and wellness. He enjoys spending quality time with his wife and family, staying active through exercise, relaxing at the Jersey Shore, and exploring new travel destinations.

Dr. Wasser's approach to patient care is rooted in empathy, trust, and collaboration. He is dedicated to listening closely to each patient's unique concerns and crafting personalized treatment plans that address both immediate symptoms and long-term mental well-being. His specialties include managing mood disorders, anxiety, depression, obsessive-compulsive disorder and stress-related conditions, with a particular emphasis on helping individuals navigate life transitions and mental health challenges.

Dr. Wasser believes in a thorough and patient-centered approach. During the first session, he takes the time to understand his patient’s history, current struggles, and goals for treatment. Together, they establish clear and realistic objectives to guide the treatment process. Dr. Wasser offers a combination of psychotherapy, medication management, and wellness strategies to support his patients. He values open communication and ensures that every patient feels heard and empowered throughout their mental health journey.

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Dr. Mattern is board certified in Adult psychiatry. Her approach to mental health is integrative, with the utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.

Dr. Mattern’s practice focuses on medication management along with elements of therapy from different modalities, such as supportive and cognitive behavioral therapy that are patient-tailored.  Dr. Mattern understands the importance of psychotherapy and may ask to bring in a therapist into your treatment team to provide the best care and outcome. Her clinical interests include depression, bipolar disorder, anxiety disorders, post-traumatic stress disorder, panic disorder, OCD, and ADHD.

After completing her undergraduate degree in Biology at Ohio Northern University, Dr. Mattern received her medical degree from Ohio University Heritage College of Osteopathic Medicine. She went on to complete her residency in psychiatry at The Ohio State University Medical Center.  She also completed yoga teacher training and presented nationally at the APA in 2019 regarding the benefits of yoga for depression.  Dr. Mattern is a member of the American Psychiatric Association, Ohio Psychiatric Physician’s Association, and Psychiatry Society of Central Ohio.

Dr. Mattern is board certified in Adult psychiatry.  Her approach to mental health is integrative, with utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.  Dr. Mattern’s practice focuses on medication management along with elements of therapy.