Marc Whaley, MD

Dr. Jon-Kar Zubieta is a board-certified psychiatrist and nuclear medicine physician whose work bridges neuroscience and clinical care. He focuses on understanding how the brain regulates motivation and stress, applying this knowledge to mood disorders, pain, and substance use. With extensive experience in functional imaging, Dr. Zubieta explores how neurobiological mechanisms shape emotional and physical well-being.

Dr. Zubieta takes a collaborative and evidence-based approach to care. He values patient perspectives and prioritizes creating a supportive environment where patients feel heard. His goal is to tailor treatment plans that address both the psychological and biological aspects of mental health conditions.

Dr. Zubieta begins with a thorough assessment of each patient’s history, symptoms, and goals. He integrates clinical evaluation with insights from neuroscience and imaging research when relevant. Together with patients, he develops a personalized treatment plan that may include therapy, medication, or combined approaches, continually adjusting strategies to optimize outcomes.

Background and credentials

Dr. Stefan is a psychiatrist with extensive experience in outpatient care, inpatient care, and assertive community treatment. She has served as a medical director for large institutions, overseeing the treatment of individuals with complex mental illnesses. Born and raised in Puerto Rico, she is fluent in both English and Spanish. She earned her medical degree from the University of Puerto Rico School of Medicine and completed her psychiatry residency at the University of Florida, where she received recognition for her skills as a psychotherapist.

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Treatment approach

Dr. Stefan is deeply committed to patient-centered care, adapting her role to the individual needs of each patient. She believes in treating the whole person, rather than just a diagnosis, recognizing that each patient has unique psychosocial circumstances. She has a strong foundation in psychotherapeutic interventions and is dedicated to providing engaging, compassionate, and meaningful therapy in every patient interaction. With over 10 years of experience as a psychiatrist, she has worked extensively in telemedicine since 2013, ensuring that remote care is as effective and personal as in-person visits.

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What you can expect in a first visit

Patients meeting Dr. Stefan for the first time can expect a comprehensive and holistic evaluation that considers their symptoms, personal history, and life circumstances. She takes the time to build strong therapeutic relationships, fostering a caring and engaging environment where patients feel understood and supported. Whether through telemedicine or in-person care, she prioritizes personalized treatment plans that integrate medication management and psychotherapy, ensuring the highest quality of care tailored to each patient’s 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. 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. Alexander Van-Den-Ende is a board-certified adult psychiatrist who recently completed his psychiatry residency training at Authority Health in Detroit, Michigan. Beyond his proficiency in medication management, Dr. Van-Den-Ende has training in talk therapy and novel treatments like Transcranial Magnetic Stimulation. He is pleased with the increase in access to mental healthcare that comes through telemedicine, and is committed to providing high quality care to his patients. Dr. Van-Den-Ende's approach emphasizes patient insight and mindfulness, guiding individuals on a journey towards self-awareness and mental well-being.

Dr. Anna Ostrovskaya is a board-certified psychiatrist with over 20 years of experience working with adults of all ages. She earned a bachelor’s degree in psychology from NYU, a medical degree from Rush Medical College, and completed her psychiatry training at Yale. Dr. Ostrovskaya has practiced in inpatient, consultation-liaison, and emergency psychiatry settings, though her primary passion is outpatient care, where she builds long-term therapeutic relationships. She has worked in private practice and clinic settings and serves on the faculty at Yale’s Psychiatry Department, teaching and supervising trainees. She treats a wide range of conditions, including anxiety, OCD, ADHD, PTSD, depression, bipolar disorder, and more, with experience across diverse populations.

Dr. Ostrovskaya emphasizes integrating therapy and medication management. She creates a warm, safe, and respectful space where patients feel understood and supported in their journey to recovery. Her approach focuses on treating the whole person, recognizing that everyone’s story is unique and informs the best path forward.

She conducts thorough evaluations and uses evidence-based prescribing while incorporating psychotherapeutic modalities such as CBT, executive skills training, insight-oriented approaches, and motivational interviewing. Understanding a patient’s history, current symptoms, and treatment goals is central to developing an effective plan and building a strong therapeutic relationship.

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Dr. Maxine Minto is a double board-certified psychiatrist. She is board certified in General Adult Psychiatry and Child and Adolescent Psychiatry. She is a Distinguished Fellow of the American Psychiatric Association (APA). Dr. Minto is an associate professor of psychiatry at the University of Central Florida College of Medicine. She is an active member of both the APA and American Academy of Child and Adolescent Psychiatry. Dr. Minto received her medical degree from the University of Miami Miller School of Medicine. She completed her general psychiatry residency and child-adolescent fellowship at the University of Miami/Jackson Memorial Hospital. She has more than 25+ years of experience working in the psychiatric profession. She has previously worked extensively in the role of medical director in multiple settings. Dr. Minto was honored with the role of medical director of a large community mental health center, child psychiatry inpatient program, adult and child inpatient residential treatment program, and outpatient residential day treatment program. She also has 8 years of experience working with the Deaf community. Dr. Minto specializes in psychopharmacology and supportive therapy. She performs comprehensive psychiatric evaluations, develops patient-centered individualized treatment plans, and schedules regular follow-up appointments. She has a wealth of experience in treating patients with depression, bipolar disorder, ADHD, and anxiety disorders.