Valentina Doumanian, MD

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Dr. Bartek holds the position of Staff Psychiatrist at Talkiatry. She is board-certified in General Psychiatry, Pediatrics, and Child and Adolescent Psychiatry. She has been caring for children and adolescents as a physician for more than 15 years. Dr. Bartek's approach is holistic, collaborative, supportive, and patient-centered. Dr. Bartek draws on her years as a pediatrician working with families and children in her work as a psychiatrist. Dr. Bartek incorporates therapeutic techniques into medication management visits, but she may also recommend adding a therapist to your care team for the best results. She received her medical degree from the University of Washington School of Medicine in Seattle, WA, before moving to Memphis to complete her residency in Pediatrics at the University of Tennessee Health Sciences Center and Le Bonheur Children's Hospital. She completed her undergraduate studies at Haverford College in Pennsylvania. After completing training, she remained in Memphis and worked in the Le Bonheur Children's Hospital Emergency Department as a pediatrician. She then moved to Nashville to work at the Monroe Carell Jr. Children's Hospital at Vanderbilt in the Emergency Department Fast Track and After-Hours Clinics. Dr. Bartek transitioned to primary care pediatrics at Pediatric Associates of Davidson County for several years before returning to the University of Tennessee Health Science Center in Memphis to complete the Child and Adolescent Psychiatry Post-Pediatric Portal Fellowship program. Dr. Bartek's primary clinical focus is treating children and adolescents.

Parker Loy, MD

Staff Psychiatrist

Dr. Parker Loy is a board-certified Psychiatrist at Talkiatry. After finishing undergraduate studies at the University of Tennessee, Knoxville, he completed the University of Tennessee Health Science Center (UTHSC) Master of Science program before enrolling in medical school at the same institution. After graduating from medical school, he completed his residency at UTHSC, during which he trained in a variety of inpatient and outpatient settings and treated a broad spectrum of mental health conditions. He enjoys treating a wide variety of conditions, including mood and anxiety disorders. Therapeutic techniques are incorporated into medication management visits when indicated, and collaboration with therapists may also be recommended.

Austin Bailey, DO

Staff Psychiatrist

Dr. Bailey is a board certified psychiatrist, specializing in medication management and psychotherapy. He enjoys the opportunity to help patients better understand their diagnosis and how biological, psychological and social interventions can be applied to live a more fulfilling life. As a recipient of the Army Health Professions Scholarship Program, Dr. Bailey earned his medical degree from the Edward Via College of Osteopathic Medicine in Blacksburg, Virginia, followed by residency at Walter Reed National Military Medical Center in Bethesda, MD. After completing residency, Dr. Bailey served at Brooke Army Medical Center in San Antonio, TX where he held several positions including Chief of Inpatient Behavioral Health Services. He also completed operational assignments, most notably a nine-month deployment to Iraq for which he was awarded the Meritorious Service Medal. Dr. Bailey enjoys teaching and has held academic appointments at Long School of Medicine and Uniformed Services University of the Health Sciences.

Mahsa Mousavi, MD

Staff Psychiatrist

Dr. Mousavi holds the position of attending psychiatrist at Talkiatry. She is Board certified in adult psychiatry and has been practicing for over 6 years. Dr. Mousavi's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow up visits. Dr. Mousavi may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She has completed her residency at Westchester Medical Center/New York Medical College. She has experience of working in private practice at the Institute for Family Therapy in Miami. She has also worked as an outpatient psychiatrist at Montefiore in NY and INOVA outpatient clinic in Virginia.

Susannah Williams, MD

Staff Psychiatrist

Dr. S. Taylor Williams is a psychiatrist with Talkiatry. She is board-certified in psychiatry and has been practicing over 14 years. Dr. Williams received her MD from the University of Alabama School of Medicine at UAB. She completed her psychiatry residency at the University of Tennessee Health Science Center. Prior to joining Talkiatry, she held an academic appointment at UTHSC as Assistant Professor of Psychiatry and was the Clinical Director of the Memphis Mental Health Institute. She specializes in the treatment of young adults and LGBTQ patients. Her practice focuses on medication management.‍

Jacqueline Hong, MD

Staff Psychiatrist

Dr. Jacqueline Hong is a board-certified adult psychiatrist who takes a genuine interest in her patients and values collaborative decision-making. Over the past 4 years of practicing, she has followed a holistic model of care that accounts for the physical, mental, social, and spiritual needs of the individual. She has a down-to-earth, patient, and warm personality, and prides herself on timeliness and professionalism. Though Dr. Hong focuses on medication management, she has a passion for supportive therapy with elements of CBT, psychodynamic therapy, and mindfulness. She may also recommend that a therapist be included in your care team if more specialized therapy is required. Dr. Hong graduated summa cum laude from Grove City College, and completed medical school at UTMB at Galveston. She finished her residency at Memorial Healthcare System in FL, where she held a leadership position in Graduate Medical Education. Dr. Hong has experience in treating a wide range of disorders, including depression, anxiety, OCD, PTSD, ADHD, schizophrenia, bipolar disorder, and addiction. She has worked with adolescent, geriatric, pregnant, and medically complex patients. Growing up in a Korean immigrant household and training in the ethnically diverse South Florida region has informed her of the unique struggles that immigrant populations face. Dr. Hong has a special interest in treating mood and anxiety disorders. Outside of the office, Dr. Hong enjoys art, cinema, and powerlifting.

Christine Reyes, MD

Staff Psychiatrist

Background and credentials

Dr. Christine Reyes is a bilingual Spanish-speaking adult psychiatrist with 25 years of experience. She completed her residency in Adult Psychiatry at Saint Vincent's Hospital and Medical Center in New York City and subsequently completed a Child Psychiatry fellowship at the University of Pennsylvania in Philadelphia. Dr. Reyes has extensive experience practicing in outpatient and community mental health settings.

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Treatment approach

Dr. Reyes provides compassionate psychiatric care using pharmacotherapy combined with supportive psychotherapy. She specializes in treating anxiety, depression, bipolar disorder, post-traumatic stress disorder (PTSD), and numerous other psychiatric conditions. Additionally, Dr. Reyes emphasizes nutritional counseling, assisting patients in achieving and maintaining a healthy weight as part of their overall wellness plan.

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What you can expect in a first visit

Patients can expect a compassionate and thorough initial assessment aimed at understanding their psychiatric symptoms, personal health goals, and lifestyle considerations. Dr. Reyes combines medication evaluation with supportive psychotherapy and may discuss nutritional guidance as part of a holistic treatment plan. She prioritizes creating a supportive environment for bilingual (English/Spanish) patients to openly discuss their mental health concerns.

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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.

Seth Sherman, MD

Staff Psychiatrist

Dr. Seth Sherman is a board-certified adult psychiatrist who has been in practice for over ten years. At the heart of Dr. Sherman's clinical approach is a strong emphasis on establishing trust, rapport, and therapeutic alliance to help persons to feel and live well and to progress toward their goals, both in treatment and in life. Dr. Sherman begins with consultation, a compassionate, collaborative process of discovery that culminates in a working diagnostic impression and, in turn, treatment recommendations. For those with whom he engages in a treatment relationship, Dr. Sherman provides psychoeducation, medication management, and individual psychotherapy, this last modality predominantly drawing from both psychodynamic and behavioral psychological models to tailor treatment to each patient. On some occasions, Dr. Sherman may believe that additional therapy is needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Sherman received his medical degree from Stanford University and went on to complete his residency in psychiatry at Harvard University. After completing training, he cultivated a private practice of psychiatry in San Francisco, California, treating persons with a variety of psychiatric illnesses, while also providing consultation and clinical supervision to psychotherapists in day-treatment and office-based practices. Next, Dr. Sherman served as a psychiatry professor at the Florida Atlantic University Charles E. Schmidt College of Medicine in Florida, where, as Associate Director of the Psychiatry Residency Training Program, he provided psychiatric inpatient treatment while bringing leadership, scholarship, teaching, supervision, and mentoring to psychiatry residents and medical students. Most recently, Dr. Sherman worked as a senior medical officer/consultant psychiatrist in New Zealand's public health system, serving local communities with expert diagnosis and treatment for a wide range of mental health conditions. He also continued to supervise U.S.-based psychiatrists, along with New Zealand psychotherapists, in advanced and complex clinical psychopharmacology and psychotherapy.

Shelah Radke, MD

Staff Psychiatrist

Shelah Radke, MD, JD, is a double board-certified Child and Adolescent and Adult Psychiatrist with over a decade of extensive experience in mental health care, specializing in the well-being of children, adolescents, and young adults. She currently serves in St. Louis, MO, where she is known for her dynamic leadership as a Medical Director and her robust clinical practice. Throughout her career, Dr. Radke has held pivotal roles, including Medical Director of Crisis Psychiatry Services at Mercy Hospital and key positions in several reputable outpatient clinics across the U.S. Her clinical acumen spans a diverse range of settings, from private practice and crisis care to specialized programs in residential and educational institutions. A staunch advocate for evidence-based approaches, Dr. Radke integrates lifestyle and pharmacological interventions to foster mental health resilience among her patients. She is particularly passionate about the shared decision-making model, which enhances patient empowerment and satisfaction by actively involving them in their treatment plans. Dr. Radke's academic contributions are equally notable. She has developed educational curriculums that significantly improve health outcomes and has shared her expertise through numerous media appearances and professional talks. Her commitment to medical education is reflected in her mentorship of nurse practitioners and her involvement in creating community psychiatry programs. Complementing her medical expertise, Dr. Radke holds a Juris Doctorate, with a focus on public health and social policy, which enriches her understanding of the legal and systemic aspects of healthcare. Her approach is deeply holistic, informed by her training in integrative medicine and her personal commitment to wellness, which she practices through nutrition, exercise, and travel with her family. Dr. Radke's professional journey is driven by a commitment to optimizing mental health outcomes and enhancing the quality of life for her patients and their families.

Alessandra Buonopane, MD

Staff Psychiatrist

Dr. Buonopane is Board Certified in Adult Psychiatry by the American Board of Psychiatry and Neurology. She obtained her medical degree with Laude from the University of Rome, La Sapienza, and completed her residency in Psychiatry from Yale School of Medicine. Dr. Buonopane has extensive experience in psychopharmacology and offers state-of-the-art medication management with compassion and empathy. She practices a holistic approach, combining psychiatric medications with elements of psychotherapy and mindfulness. She offers individualized and comprehensive treatment plans which address the whole person, including lifestyle and social engagement, because the latest research findings show that both play an important role in mental and physical health. Education on mental illness and recommendations on diet and exercise are always discussed with the patients, according to the individuals' needs. Dr. Buonopane spends time listening to patients and makes plans based on clinical evidence without an authoritative approach, taking into consideration the patient's level of comfort and views because, in her experience, the best outcomes are always reached when patients fully understand and agree with the management of their conditions. Dr. Buonopane has been in practice for more than twenty years and has extensive experience in general Adult Psychiatry with a focus on mood disorder and anxiety. She has been leading clinical programs and teaching medical students, residents, and fellows in psychiatry and addiction in various clinical settings, such as private institutions and universities, including Yale School of Medicine. Prior to joining Talkiatry, Dr Buonopane had her own in-person clinical services for over ten years and telehealth services over the past four years, treating patients suffering mainly from depression, bipolar disorder, and anxiety. When working in private practice, Dr Buonopane received the Compassionate Doctor Recognition (Vitals) and the Patient's Choice Awards (Vitals), both based on patients' reviews.

Rebecca Siwanowicz, LCSW

Staff Therapist

Rebecca Siwanowicz is a Licensed Clinical Social Worker who began her career in 2013, maintaining various positions in both inpatient and outpatient settings while treating substance use and mental health disorders. Rebecca graduated with her BSW from Florida Atlantic University in 2013 and graduated with her MSW in 2016. Rebecca is trained in Accelerated Resolution Therapy and is a Master's Level Certified Addiction Professional in the state of Florida.‍Rebecca's areas of expertise are trauma, anxiety and depressive disorders, issues related to codependency and low self-esteem, life transitions, self-care and emotion regulation. Rebecca takes an individualistic approach when treating clients, greatly valuing and promoting individuality and autonomy. Rebecca practices through the lens of Family Systems Theory and Attachment Theory, utilizing components of Existentialism, Strength Based Therapy, Dialectical Behavior Therapy, 12 Step Principles, and Client Centered Therapy. Rebecca takes a psychosocial approach toward treatment, providing her clients with unconditional positive regard, psychoeducation, and practical coping skills to support them in building a life of their choosing.

Maxine Zhou, MD

Staff Psychiatrist

Dr. Zhou is a board-certified psychiatrist who has more than 4 years of experience practicing in various clinical settings with an emphasis on mental health care in outpatient settings. She practices a holistic approach to developing an individualized plan to work toward a patient's goals. Dr. Zhou is experienced in treating depression, bipolar spectrum disorders, obsessive-compulsive disorders, post-traumatic stress disorder, generalized anxiety, and other related psychiatric disorders. Dr. Zhou received her medical degree from Texas Tech University Health Sciences Center School of Medicine and completed her adult psychiatry residency training at LSU Health Shreveport. Dr. Zhou's background and experiences have broadened her understanding of cultural stigmas and the relationship it plays in psychiatric care. She incorporates a multitude of treatment modalities such as supportive therapy, cognitive behavioral therapy, and mindfulness practices as an adjunct to pharmacotherapy. Dr. Zhou recognizes the value of a multifaceted approach to wellbeing and may recommend treatment modalities that are complementary to medication management.

Valentina Doumanian, MD

Education and training

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