Walter Piddoubny, MD

Dr. Jenna Hartman is double board certified in General Psychiatry and Addiction Psychiatry. Dr. Hartman graduated from Tufts University before completing medical school at New York Institute of Technology College of Osteopathic Medicine. She then completed residency at Maimonides Medical Center, where she was a Chief Resident, and then pursued an addiction psychiatry fellowship at Mount Sinai Beth Israel. Dr. Hartman was also trained in psychodynamic psychotherapy by the Psychoanalytic Association of NY. Following her training, Dr. Hartman returned to Maimonides Medical Center, where she worked as an attending adult outpatient clinic, treating patients from many different backgrounds with a wide array of diagnoses. She holds a special interest in treating mood disorders, anxiety disorders, and OCD. Dr. Hartman uses a compassionate and thoughtful approach in order to form a collaborative partnership with her patients. She believes in treating the person as a whole and tailoring treatments to each individual's specific needs. Dr. Hartman works with patients in 30 30-minute follow up sessions, where in addition to medication management she provides supportive and at times psychodynamic therapeutic techniques.

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. 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. Fatemeh Safian is a board-certified psychiatrist with experience in outpatient, inpatient, and telepsychiatry settings. She completed her residency at Larkin Community Hospital, caring for a diverse range of patients. Dr. Safian diagnoses and treats a wide variety of conditions, including depression, anxiety, OCD, PTSD, trauma-related disorders, phobias, personality disorders, ADHD, bipolar disorder, postpartum depression, and concerns across all age groups. She is dedicated to creating a safe, supportive space where people feel truly heard—believing good psychiatry starts with listening.

Dr. Safian fosters a warm, respectful, and judgment-free environment where patients can share openly. She takes time to understand each person’s symptoms, story, values, and goals. Medication is just one option; she also considers therapy, lifestyle changes, and other supports. Collaboration and trust are central to her approach, with patients guiding the care decisions.

During the first appointment, Dr. Safian conducts an in-depth, unhurried conversation to explore the patient’s history and goals. Together, they develop a personalized treatment plan that may include medication, therapy referrals, and practical strategies. Ongoing follow-ups provide space to track progress, make adjustments, and ensure the patient feels comfortable and empowered.

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.

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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.

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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.

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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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Angelica Luciano, PMHNP, has been dedicated to health care for over 22 years. Her journey began in 2003 when she enlisted in the Air Force as a medic and later served as a nurse in the Department of Defense. She earned her bachelor’s degree in Nursing from Indiana State University, was commissioned as a Nurse Officer in the U.S. Public Health Service, and went on to complete her master’s at Gonzaga University. Inspired by her work as a psychiatric RN, Angelica pursued her calling in mental health and became board certified as a Psychiatric-Mental Health Nurse Practitioner in 2017.

Angelica provides care through a warm, direct, and nonjudgmental style. She takes a biopsychosocial approach, recognizing the interplay of biological, psychological, and social factors in mental health. By combining psychopharmacology, patient education, and brief supportive therapy, she offers care that is accessible, collaborative, and authentic. Patients can expect to feel heard, respected, and actively involved in their treatment decisions.

Angelica begins with a comprehensive consultation to understand each patient’s history, concerns, and goals. This may take several appointments before finalizing a treatment plan. Plans may include lab work, collaboration with a patient’s broader health care team, and involvement of supportive family members if desired. Her goal is to create individualized care tailored to patient needs while ensuring comfort, advocacy, and trust. She emphasizes that patients are never defined by a diagnosis but valued as whole individuals.