Reaghan Hicks, MD

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. Michael Petetit has worked with people from many different walks of life in clinics, hospitals, and online, providing evidence-based treatments for a wide range of mental health conditions. His professional journey is unique—he began his career as a research chemist, later earned a Master’s degree in psychology and worked with children, before pursuing his medical degree and completing a psychiatry residency.

Dr. Petetit approaches treatment as a true collaboration. He partners with patients to clarify goals and create individualized treatment plans that reflect their priorities and values. He strives to be non-judgmental, direct, and honest in his style, building a therapeutic relationship that supports open communication and trust.

Dr. Petetit begins with a thorough evaluation to understand each patient’s circumstances and challenges. From there, he works with patients to set and prioritize goals, review treatment options, and select a plan that feels both comfortable and practical. As treatment progresses, he regularly revisits and refines the plan, ensuring it remains effective and aligned with the patient’s evolving needs.

Background and credentials

Dr. Kristina Schnitzer is a board-certified psychiatrist. She earned her medical degree from the New York University School of Medicine and completed her residency in Adult Psychiatry at the Massachusetts General Hospital/McLean Adult Psychiatry Residency Program. She further specialized by completing a one-year clinical and research fellowship in Public and Community Psychiatry through Massachusetts General Hospital and the Massachusetts Department of Mental Health. In addition to her medical training, she holds a Master of Public Health (MPH) from the Harvard T.H. Chan School of Public Health. She has over three years of experience practicing psychiatry across inpatient, emergency, and outpatient settings.

‍

Treatment approach

Dr. Schnitzer focuses on medication management as the foundation of her treatment approach, typically combining it with supportive or emotionally focused therapy during 30-minute follow-up visits. She takes a collaborative and individualized approach to patient care and, when needed, may recommend additional therapy by integrating a therapist into the care team to ensure the best possible outcomes. She has experience treating a broad range of psychiatric disorders in various clinical settings.

‍

What you can expect in a first visit

Patients can expect a thorough and structured evaluation in their first visit, where Dr. Schnitzer carefully assesses their symptoms, medical history, and treatment goals. She emphasizes open communication and collaboration, ensuring that patients are fully involved in shaping their treatment plans. Follow-up visits typically last 30 minutes, during which she monitors progress, adjusts treatment as needed, and may recommend additional therapeutic support for comprehensive care.

‍

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.

‍

Cassandra Thomas-Jingles is a dedicated, board-certified Psychiatric Nurse Practitioner with dual certification as a Family Nurse Practitioner. She is deeply passionate about helping others and takes a holistic, evidence-based approach to mental healthcare, empowering patients to live life to their fullest potential.

Her practice focuses on medication management and supportive therapy, offering 30-minute follow-up sessions. When additional therapy is needed, she recommends including a therapist in the care team to ensure the best possible outcomes. With extensive experience in both outpatient and inpatient settings, Cassandra has worked with adults and children facing a wide range of mental health conditions, including ADHD, anxiety, depression, and psychotic disorders. She strongly believes in prioritizing client involvement and fostering interprofessional collaboration.

Your mental health journey is unique, and Cassandra is here to listen with compassion and without judgment. All conversations are confidential, and her goal is to create a safe, welcoming space where you feel comfortable sharing your thoughts and concerns.

During your initial appointment, Cassandra will review your mental health history, current symptoms, lifestyle factors, and any previous treatments to gain a comprehensive understanding of your needs. Together, you will develop a personalized treatment plan that may include therapy, medication, or other supportive strategies. She values shared decision-making, ensuring your input is considered at every step of the process.

If medication is part of your treatment, Cassandra will clearly explain its benefits, potential side effects, and how your progress will be monitored. Adjustments can be made as needed to achieve the best possible outcome.

Healing takes time, and Cassandra is committed to supporting you throughout the process. Follow-up appointments are essential for tracking progress, making necessary adjustments, and ensuring you receive the care you need.

‍

Dr. Megan Marumoto provides holistic and personalized care as an integrative psychiatrist board-certified in General Psychiatry, Child & Adolescent Psychiatry, Integrative Medicine, and Lifestyle Medicine. She takes a root cause approach to treating mental health conditions as a certified Functional Medicine practitioner. Dr. Marumoto treats a wide range of mental health conditions in children, adolescents, and young adults, including ADHD, anxiety, depression, phobias, OCD, and trauma-related conditions. Patients may expect a comprehensive assessment with evidence-based treatment focusing on nutrition and healthy lifestyle interventions as well as medication management in 20�30-minute sessions. She enjoys working collaboratively with therapists and health coaches to achieve the best outcomes. She also provides supportive therapy and other therapies when indicated. She received her medical degree from the John A Burns School of Medicine and completed her Psychiatry Residency and Child & Adolescent Psychiatry fellowship at the University of Hawaii. Wishing to provide comprehensive care beyond medication management and therapy, Dr. Marumoto completed a second fellowship in Integrative Medicine at the University of Arizona. She has over 20 years of clinical experience working with military and civilian populations.

Dr. Alexis Kropf is a board-certified adult psychiatrist beginning her practice at Talkiatry after four years of clinical experience in residency. Dr. Kropf primarily focuses on providing medication management during 30-minute follow-up visits, weaving in elements of supportive therapy according to the needs of her clients. When additional therapy is indicated to promote recovery, Dr. Kropf may recommend that her clients work with a therapist as part of the treatment team. Dr. Kropf credits her undergraduate education at Southwestern University, a small liberal arts college, for strengthening her curiosity about and dedication to serving others. She received her medical degree from the University of Texas Southwestern Medical Center in Dallas, Texas, where she also completed her psychiatry residency training. During residency, she was involved in medical student education and resident leadership, serving as a chief resident during her final year of training. She also utilized her fluency in Spanish and medical Spanish interpreter training to serve Spanish-speaking patients and to lead Spanish-language group therapy sessions. In addition to psychopharmacology, Dr. Kropf studied psychotherapeutic interventions, including psychodynamic and cognitive behavioral therapies. She has experience working with clients experiencing many different mental health challenges, with a primary clinical focus including the treatment of anxiety, depression, and PTSD.