Mu Xu, MD

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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Dr. Kevin DiCesare is a board-certified psychiatrist, treating adults. He received his undergraduate degree at Harvard University, his medical degree at the University of Massachusetts Medical School, and then went on to train at Maine Medical Center for his psychiatric residency. He has 22 years of expertise in diagnosing and treating psychiatric conditions, including depression, anxiety, Bipolar spectrum disorders, adjustment problems, ADHD and other disorders. He is well versed in psychopharmacological interventions, but is a proponent of patients also being active in psychotherapy whenever appropriate. He prides himself in collaboratively arriving at treatment decisions with his patients, and taking the time to listen to their concerns and answer their questions.

Dr. DiCesare has worked in various settings, including community mental health centers and large hospital systems, with experience in inpatient, outpatient, and consultative roles. Prior to joining Talkiatry, he most recently served as an attending psychiatrist on the staff of Southern New Hampshire Health System, where he provided consultative care to referrals made from primary care providers and various specialists.

Dr. Wellin is a double board certified psychiatrist specializing in child and adolescent psychiatry and adult psychiatry. She has been in private practice and worked in community clinics for over 44 years. Dr. Wellin's practice focuses on medication management in conjunction with supportive psychotherapy in 30-minute follow-up visits. She encourages a team approach involving psychotherapists, medical doctors, and parents and family when appropriate, to provide holistic care for optimal outcomes. Dr. Wellin received her medical degree from the Albert Einstein College of Medicine, in Bronx, NY. She did her residency in adult psychiatry at the Jacobi Hospital Department of Psychiatry in Bronx, NY. Her fellowship in child and adolescent psychiatry at Columbia University St Luke's-Roosevelt Hospital NYC followed. For the last 5 years, she has been an assistant clinical professor at the Adolescent Health Center at Mt Sinai Hospital NY. During this period she was also a consulting psychiatrist at the McShane Center for Psychological Services at Pace University. Dr. Wellin trained at the Psychoanalytic Institute at NYU. She was certified in hypnosis by NYSEPH in NYC and she has also received training in EMDR. Dr. Wellin worked at a NYC rehab for substance abusers and was the medical director of a private program for children of substance abusers and their families. Her primary current focus is on adolescents and college-aged patients.

Dr. Jonathan Bui is an MD who earned his medical degree from the University of Maryland, School of Medicine, and completed his residency at Walter Reed National Military Medical Center. He served as a military psychiatrist for eight years, including deployment to Iraq, and was honorably discharged as a Major. He has experience in both outpatient and inpatient care, with a strong focus on compassionate, patient-centered treatment.

Dr. Bui creates a welcoming and supportive environment where patients feel heard and understood. He collaborates with patients to set achievable treatment goals and draws on extensive experience in treating a variety of mental illnesses, including post-traumatic stress disorder, to ensure the best outcomes.

Dr. Bui begins by thoroughly reviewing a patient’s history to understand their background and concerns, helping to establish meaningful treatment goals. At follow-up appointments, he reviews progress, addresses any new issues, and adjusts care plans collaboratively to support long-term mental health and well-being.

Dr. Jennifer Snowden completed medical school at the University of Arkansas for Medical Sciences in Little Rock, Arkansas in 1995. She then completed a residency in general psychiatry at Emory University in Atlanta, Georgia, followed by a fellowship in forensic psychiatry also at Emory University in Atlanta, Georgia from 1995-2000. She spent ten years practicing forensic psychiatry at a state hospital in Atlanta. She then decided that she wanted to travel and spent eighteen months as a locum tenens psychiatrist primarily practicing in New England. During this time, she met her future husband and they decided together that they eventually wanted to live in the New England area. In 2013, she officially became a telepsychiatrist, which eventually provided her with the opportunity to move to Rhode Island and practice out of the home she and her husband bought there. She initially saw patients via telepsychiatry at a community mental health center in rural Georgia and later took a position as a remote consultant telepsychiatrist at Acadia Hospital in Bangor, Maine. Dr. Snowden uses a practical and realistic approach with patients to assist them in identifying small, attainable goals and then motivating them to achieve those goals. She prefers to work with adults and relishes the opportunity to work with patients who are highly motivated for change.

Background and credentials

Dr. Schaefer is a board-certified adult psychiatrist with over 16 years of experience. She earned her medical degree from the University of Nebraska Medical Center in Omaha, NE, and completed her adult psychiatry residency at Oregon Health and Science University in Portland, OR. She then specialized further by completing a forensic psychiatry fellowship at Yale University. She has worked as a staff psychiatrist at Atrium Health System for over 16 years.

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Treatment approach

Dr. Schaefer’s practice primarily focuses on medication management, which she offers in conjunction with supportive therapy and elements of cognitive-behavioral therapy (CBT). She takes a patient-centered and collaborative approach, ensuring that treatment is tailored to each individual’s needs. If additional therapy is required, she may recommend working with a therapist as part of a comprehensive care plan. Her primary focus areas include depression, anxiety disorders, and obsessive-compulsive disorder (OCD).

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What you can expect in a first visit

During the first visit, patients can expect a thorough psychiatric evaluation, where Dr. Schaefer carefully assesses their symptoms, treatment history, and mental health goals. She works collaboratively with patients to develop a personalized treatment plan, which may include medication management and therapy recommendations. Follow-up visits are typically 30 minutes and focus on monitoring progress, adjusting treatment as needed, and ensuring the best possible patient outcomes.

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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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