Michelle Hamilton, PMHNP

Dr. Maria Lapchenko is a Doctor of Osteopathic Medicine (DO) and is double board-certified in adult and forensic psychiatry. She has experience working in both inpatient and outpatient settings and treats a wide range of psychiatric conditions, including anxiety, mood, personality, and trauma-related disorders. Dr. Lapchenko values thoughtful, individualized care and approaches psychiatry with curiosity, compassion, and respect for each patient’s lived experience.

Patients can expect a collaborative, supportive relationship built on trust and shared decision-making. Dr. Lapchenko believes that high-quality psychiatric care starts with listening and understanding each patient’s goals and concerns. She emphasizes transparency, patient education, and tailoring treatment plans to meet individual needs.

Dr. Lapchenko begins with a comprehensive evaluation to understand symptoms, history, and priorities. For many patients, she finds that combining medication management with talk therapy leads to the most effective outcomes, and she is experienced in providing both. She currently provides virtual care to adult patients in Pennsylvania, Ohio, and New York.

Dr. Kevin Lu is a board certified adult psychiatrist. In addition to medication management, he integrates elements of psychotherapy, psychoeducation, lifestyle changes, and relationship skills into his approach. He enjoys working with a variety of individuals and conditions, with particular experience with veterans, immigrants, and university students. He has a friendly and casual style, and prioritizes strong therapeutic relationships in his work. Dr. Lu completed his undergraduate studies at New York University's Stern School of Business, and after a short career in finance, he made a transition into medicine. He received his medical degree from the Zucker School of Medicine at Hofstra/Northwell, and completed residency training in psychiatry at the University of Arizona in Tucson.

Xavier Diao, MD (he/him) is a board-certified psychiatrist. He earned his undergraduate degrees in Psychology and Biological Sciences at the University of Maryland, where he also obtained his medical degree. Dr. Diao completed his psychiatry residency at the Icahn School of Medicine at Mount Sinai, received additional training in child and adolescent psychiatry at Columbia and Cornell, and finished a psychoanalytic fellowship at the New York Psychoanalytic Society & Institute. Prior to joining Talkiatry, he was an Assistant Professor of Clinical Psychiatry at the University of Pennsylvania, where he provided clinical care and teaching along the undergraduate-graduate medical education continuum.

Dr. Diao's therapeutic orientation is informed by psychodynamic, cognitive behavioral, and dialectical behavior modalities. He has expertise in the treatment of a diverse range of mental health conditions, including depression, anxiety, OCD, and PTSD. Dr. Diao uses a developmentally informed and LGBTQ-affirmative approach in his practice, with the aim of enriching meaning and alleviating suffering in the domains of work, play, and love.

Dr. Diao begins each encounter with gentle curiosity, inviting patients to share their stories without fear of judgment. Together, he crafts an individualized treatment plan with the patient that may include medication, psychotherapy, and/or referrals to subspecialty care, always in close collaboration with other members on the treatment team.

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Dr. Vina Mehta is double-boarded in adult psychiatry and child & adolescent psychiatry. With over 30 years of experience, she has provided compassionate care across inpatient, residential, and outpatient settings. She is committed to supporting patients with a wide range of psychiatric conditions, including PTSD, depression, bipolar disorder, anxiety, OCD, and ADHD.

Dr. Mehta works collaboratively with her patients, creating a supportive environment that emphasizes understanding and shared decision-making. She values open communication and tailors treatment approaches to align with each patient’s unique goals and needs.

Her approach combines psychotherapy—including cognitive, behavioral, and supportive techniques—with thoughtful medication management. Dr. Mehta establishes individualized treatment plans, focusing on strategies that promote long-term wellness and resilience.

Steven Warren, PMHNP, has over 25 years of psychiatric nursing experience in both inpatient and outpatient settings. He has provided extensive individual and group psychotherapy and education, and since 2017, has offered medication management and brief therapy in a collaborative community mental health setting. Steven earned his Bachelor of Nursing in 2011 and Master of Nursing in 2017 from Indiana University, and is ANCC board-certified as a Psychiatric Mental Health Nurse Practitioner.

Steven values open and honest communication, working directly with patients to set clear, achievable treatment goals. He is dedicated to ensuring each person he works with feels heard, respected, and supported throughout their mental health journey. His approach emphasizes collaboration, empathy, and trust.

During the first session, Steven takes time to understand each patient’s history, concerns, and goals. He develops individualized treatment plans that reflect patient values, adapting them as needs evolve. Through a strong therapeutic relationship, he provides guidance and support to help patients achieve meaningful and lasting progress.

Justin Stone is a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP) with experience in both outpatient and inpatient psychiatric settings, including in-person and telehealth care. He completed his undergraduate and master’s programs at Southern Adventist University in Collegedale, Tennessee. Justin is committed to providing compassionate, patient-centered care that addresses the whole person—mind, body, and environment.

Justin works collaboratively with patients to reach personal goals and support a more fulfilled life. He strives to create an open, judgment-free relationship where patients can be completely themselves. His aim is to provide a safe space for vulnerability without fear of judgment, fostering trust and partnership in the therapeutic process.

Patients can expect a thorough initial evaluation to ensure the correct diagnosis is addressed from the start. Justin prioritizes safety and evidence-based best practices while tailoring treatment plans to individual goals. His approach is focused on developing personalized strategies that help patients achieve meaningful improvements in mental health and overall well-being.