Katherine Vital-Daley, MD

Dr. Michele Wiener is a psychiatrist with over 35 years of experience treating patients with mental health issues. Dr. Wiener's practice has historically focused on treating patients with varying mood disorders, anxiety disorders, psychotic disorders, and post-traumatic stress disorder, often complicated by substance use disorders. Dr. Wiener enjoys working with patients of all ages. She is skilled in both psychotherapy and medication management. While the emphasis will generally be on medication management, Dr Wiener will utilize insight-oriented, cognitive behavioral, and supportive psychotherapy skills to help her patients reach their treatment goals. She completed her internship at Bronx Lebanon Hospital, her residency at Montefiore Medical Center and a two-year fellowship in biological psychiatry, psychopharmacology and geriatric psychiatry at Albert Einstein College of Medicine. She served for over 20 years as Chief of Psychiatric Services for Behavioral Health Services at St John's Riverside Hospital Park Care Pavilion formerly Yonkers General Hospital. Here she was also able to enjoy teaching medical students from The Lake Erie College of Osteopathic Medicine in their psychiatric rotation. She has been Assistant Medical Director for Arms Acres, in Carmel, NY for over five years.

Dr. Whitehouse is a board-certified adult psychiatrist with a strong background in neuroscience and psychopharmacology who has been in practice for over 25 years. At the heart of Dr. Whitehouse's clinical approach is a strong emphasis on establishing trust, building a therapeutic relationship to help patients achieve their goals, and helping people better understand their brain, its strengths, and vulnerabilities and how to use assessment and training to maximize everyone's unique emotional and cognitive capacity. Dr. Whitehouse's practice focuses on medication management. Typically, he offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. Occasionally Dr Whitehouse may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. He received his medical degree from Dartmouth Medical School and went on to complete his residency in psychiatry at MGH in Boston. After completing training, Dr. Whitehouse has worked in every setting from a Community Mental Health Center in rural VT, a General Hospital Department of Psychiatry in Waterbury CT, and a private psychiatric hospital in Massachusetts He has held academic clinical appointments at Dartmouth, Yale and Harvard and provided supervision to medical students, residents, APRNs, Social Workers and Mental Health Clinicians. In addition to his direct clinical work, he has extensive experience with value-based care having worked with the behavioral divisions of CIGNA Behavioral Health, Optum Behavioral Health and MCG. He also has been involved in the latest approaches made possible in mental health by the growth of direct-to-consumer services as part of digital transformation. He believes that every patient is unique and every situation different. He seeks to bring a wealth of experience to bear but, above all, to do so with a personalized and compassionate focus on what will help everyone specifically, practically, effectively, and efficiently. He is especially happy to help people new to emotional help understand the value of different approaches.

Glenn is a Board-Certified Psychiatric Mental Health Nurse Practitioner with nearly 30 years of experience in health care, dedicated to addressing the mental health needs of his community. With a background in both inpatient and outpatient settings, he is committed to helping individuals become the best versions of themselves—no matter where they are in their journey at the time of their first appointment.

Outside of work, Glenn enjoys spending time with his family, biking, and being outdoors.

He takes a patient-centered approach and emphasizes that he, too, is human. Everyone faces challenges at different times and in different ways. Glenn adopts a holistic perspective, recognizing that effective treatment involves understanding how life challenges impact a person as a whole. He is dedicated to providing compassionate, empathetic, and practical care to all his patients.

Glenn engages with patients in a way that makes it easy and natural for them to share their stories. From there, he promotes a shared decision-making approach to develop the most effective treatment plan. His areas of expertise include psychopharmacology, as well as Cognitive Behavioral, Supportive, and Psychodynamic therapies.

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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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Gregory Miller, DO, is an adult psychiatrist who prioritizes understanding his patients by first listening to their stories. He collaborates with them to develop both pharmacological and non-pharmacological solutions aimed at improving their functionality. Dr. Miller emphasizes that functioning better often leads to feeling better. Whenever possible, he approaches treatment within the context of the family system surrounding the individual. Raised in South Carolina, and now residents of Florida, Dr. Miller and his wife of 31 years have six children. He enjoys outdoor activities and team sports and is an avid fan of Tolkien and C.S. Lewis. He at times incorporates analogies from their works into therapy if appropriate.

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.