Bryce Thacker, PMHNP

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Ms. Celeste Boyd is a dual board certified Psychiatric Mental Health and Family Nurse Practitioner. She is the CEO and Founder of Metamorphosis Psyche, a psychiatric mental health resource platform. She has practiced in family medicine since 2011 and psychiatric mental health medicine since 2013. She has clinical experience and expertise in substance use disorders, addiction rehabilitation, sleep medicine, general psychiatry, and serious mental illness (SMI) in both private and public sectors. In Academia, she has extended her knowledge and experience as Adjunct Clinical Faculty at School of Nursing Graduate Programs.

Since 2017, Ms. Boyd has been practicing general psychiatry in the outpatient private sector. Ms. Boyd provides medication management and psychotherapy for acute, chronic, and comorbid psychiatric conditions that include Anxiety Disorders, Depression, Mood Disorders, ADHD, OCD, and PTSD. Her clinical treatment modalities include supportive therapy, solution-focused therapy, motivational enhancement, mindfulness, and cognitive behavioral therapy.

As a clinician, she promotes mental health awareness to reduce stigmatization and empower those suffering and struggling with mental illness. Ms. Boyd clinical practices are oriented towards the Mental Health Recovery Model, which permits individuals to go through an active process of change, being in control, strengthening, and empowering themselves to improve their mental health and well-being.

Mary Poupon, PMHNP

Staff Nurse Practitioner

Mary Poupon is an experienced board certified psychiatric APRN/psychiatric nurse practitioner with over 30 years' experience in her field. She completed her graduate work at Columbia University and is published in her field. Her practice sites have included inpatient hospital treatment, partial hospital programs, in-home programs, outpatient clinics and alternative therapy including equine assisted therapy. She was the program director and clinician with the Ryan White Mental Health Program in New York providing innovative mental health treatment for adolescents and adults living with HIV/AIDS in the boroughs of Manhattan, Queens, Brooklyn and the Bronx. In 2013 she became certified as an equine assisted psychotherapist and served as the Director of Mental Health at Embrace Hope in Sandy Hook, CT. She was appointed as the Executive Director of Embrace Hope in 2017. Embrace Hope provided treatment to children, adolescents and adults who were victims of trauma related to the shooting at the Sandy Hook Elementary School. She presented a TED x talk in 2018 regarding her work with victims of trauma. She has provided treatment in the outpatient setting for children, teens, and adults. She has provided treatment to young adults at the Covenant House New York shelter program for homeless young adults.

Mary believes the human spirit is resilient. There are many challenges in the lifespan and self-care is paramount to success. Mary provides psychiatric consultation and assessment and provides a pathway to change. Treatment may include medication management, therapy, and coping skills to assist with life challenges. Mary believes treatment is a partnership and believes in establishing mutually agreed upon goals.

Mary's process for working with patients begins with active listening. The assessment begins with the patient describing why they are seeking engagement in behavioral health treatment at this time. She will complete a psychiatric assessment and evaluation and establish mutually agreed upon goals for treatment. She offers medication management in conjunction with supportive therapy in 30-minute follow-up visits. Mary believes that therapy and medication management if indicated together provides the best treatment outcomes.

Deborah Bearman, PMHNP

Staff Nurse Practitioner

Deborah Bearman, PMHNP, is a board-certified psychiatric nurse practitioner who is dedicated to helping those struggling with mental health concerns to live a more fulfilling life. Deborah received her Master of Science in Nursing with a specialty in psychiatry from SUNY Upstate Medical University. She is trained in psychiatric diagnosis, medication management, and psychodynamic and cognitive behavioral therapies. Over the past 10 years, she has gained valuable experience in a number of settings, including inpatient and outpatient facilities, community mental health clinics, and private practice. Deborah is devoted to addressing adult mental health from a holistic perspective, utilizing a combination of medication management with supportive counseling, which she offers during 30-minute follow up sessions. While she focuses on medication management, she believes most people benefit from therapy as well and has extensive experience in psychodynamic and cognitive behavior therapies. She also believes in providing psychoeducation to patients, families, and caregivers. As a psychiatric nurse practitioner, Deborah understands the value of the therapeutic relationship and the positive impact it can have on daily function. By working with patients to create comprehensive and effective treatment plans, Deborah supports her patients in living healthier and more satisfying lives.

Rebecca Kostopoulos, PMHNP

Director, Psychiatric Nurse Practitioners

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner dedicated to helping people struggling with mental health concerns find ways to live a full and balanced life. Rebecca's practice focuses on medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy during 30-minute follow-up visits. However, occasionally Rebecca may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She received her Master of Science in Nursing with a specialty in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. She is trained in psychiatric diagnosis, medication management, and psychodynamic and cognitive-behavioral therapies. Rebecca has extensive experience evaluating and treating adults in a variety of settings over the past 10 years. Previously, she worked at Elmhurst Hospital's Comprehensive Psychiatric Emergency Program and at Gracie Square Hospital in an inpatient unit, in addition to community health settings and skilled nursing facilities. As a nurse practitioner, she believes that addressing mental health concerns is just as important as addressing physical concerns. She values the therapeutic relationship with a collaborative and empathic approach to treatment.

Lena Champlin, PMHNP

Staff Psychiatric Nurse Practitioner

Lena Champlin, PMHNP-BC is a dual certified Family Practice and Psychiatric Mental Health Nurse Practitioner. She received her Family Nurse Practitioner degree from the University of South Florida and her Psychiatric Mental Health Nurse Practitioner degree from Augusta University. Since beginning practice in 2013, she has worked in inpatient and outpatient settings seeing a wide range of clients. Her expertise covers psychiatric issues of all types, including anxiety, depression, mood disorders, and ADHD. She is committed to finding solutions for her clients by using a holistic approach that takes into account physical and mental issues. Treatments include therapy, medication, and lifestyle modifications. She enjoys working with clients who are motivated to change and feel better. She takes time to listen to clients and treats each as an individual.

Jacob Kannarkat , MD

Staff Psychiatrist

Dr. Jacob T. Kannarkat is an adult psychiatrist. Dr. Kannarkat's practice focuses on medication management. In his visits, he uses an integrative approach, blending an empathic, problem-solving orientation with an understanding that the reasons for an individual's condition can be complex. He has experience dealing with many forms of mental illness and works collaboratively with his patients and their other treatment providers in making a plan for recovery. Dr. Kannarkat completed undergraduate studies at the University of Florida. After receiving his medical degree at the University of Miami Miller School of Medicine, Dr. Kannarkat continued for residency at the University of Miami/Jackson Health System. He ultimately completed his training as Chief of Psychiatric Emergency Services at Yale School of Medicine. Dr. Kannarkat has experience working with adults of all ages who are dealing with depression, anxiety, bipolar disorder, PTSD, substance use disorders, and many other conditions.‍

Albert Fernandez, MD

Staff Psychiatrist

Dr. Albert Fernandez is a board-certified physician who specializes in adult psychiatry. He has expertise in medication management and psychotherapy. His practice emphasizes a holistic approach to treatment and his style is empathic, insight-oriented, and flexible. He has particular interests in helping individuals struggling with depression, difficulty functioning at work or school, life transitions, bipolar spectrum disorders, ADHD, obsessive-compulsive disorders, relationship struggles, anxiety disorders, sleep disturbances, low self-esteem, and more. He received his bachelor's degree in psychology from Princeton University with a certificate in neuroscience. He earned his M.D. from Renaissance School of Medicine at Stony Brook University and completed his residency training in psychiatry at the Mount Sinai Morningside and West Hospitals. He has supervised junior residents and medical students. He also worked as a staff psychiatrist at Fordham University and published a review article on the effects of residential relocation on mental health. He is currently a Post-Doctoral Candidate in the Adult Analytic Training Program at the New York Psychoanalytic Society and Institute.

Bih Bikelle, MD

Staff Psychiatrist

Dr. Bih Bikelle is a compassionate psychiatrist based in Florida, dedicated to creating a warm and welcoming environment for her patients. She focuses on empowering individuals to actively participate in their healing journey. Specialized in treating a wide range of mental health conditions, she combines medication management with psychotherapy techniques during 30-minute sessions. She utilizes evidence-based practices tailored to meet each individual's unique needs. Dr. Bikelle is an experienced psychiatrist in Florida, bringing over 11 years of dedicated service to adults and children facing emotional disturbances. Central to her practice is the creation of a warm, trusting, and welcoming environment where every patient feels heard and empowered to engage actively in their healing process. Dr. Bikelle treats a wide variety of mental health conditions, offering medication management in conjunction with psychotherapy techniques during typically 30-minute appointments. She has a particular passion for women's health and trauma-related issues. Dr. Bikelle earned her medical degree from the Faculty of Medicine and Biomedical Sciences in Cameroon, followed by residency training at the University of Nevada School of Medicine in Reno. After completing her residency in 2013, she became board certified by the American Board of Psychiatry and Neurology. Her commitment to excellence has earned her the distinguished title of Fellow of the American Psychiatric Association and recognition as a 'Top Doctor' in 2022. Throughout her career, Dr. Bikelle has served as an attending psychiatrist in various settings, including inpatient facilities, consult-liaison services, outpatient clinics, substance abuse treatment centers, and community behavioral centers, where she also held a role as medical director. Her approach is evidence-based and tailored to meet each individual's unique needs, ensuring that every patient receives the personalized care they deserve.

LaTonya Washington, LCSW

Staff Therapist

LaTonya Washington, LICSW-S, PIP, is a trauma and couples' therapist with a Master of Social Work from the University of Alabama and advanced training in Brain spotting, Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), and the Gottman Method for couples therapy. With over 15 years of experience, she provides compassionate, evidence-based care to individuals and couples navigating trauma, relationship challenges, and major life transitions.

She specializes in helping couples rebuild trust after infidelity, strengthen emotional connection, and improve communication. She also supports individuals facing anxiety, burnout, and the emotional impact of chronic illness, guiding them toward healing and resilience

New clients can expect a warm, supportive space where they feel heard and understood. LaTonya takes a collaborative approach, tailoring therapy to each client’s needs while integrating practical strategies for healing and growth. Her sessions are focused on fostering insight, building emotional resilience, and equipping clients with tools to create lasting change. Whether working with individuals or couples, her goal is to help clients navigate life’s challenges with greater clarity, connection, and confidence.

Jisoo Park, DO

Staff Psychiatrist

Dr. Jisoo Park is a board-certified psychiatrist. She obtained her bachelor's degree from Tufts University, where she double majored in Biopsychology and Art History. She attended medical school at Nova Southeastern University, and completed her psychiatry residency at Stony Brook University Medical Center. After graduating with her residency, she was appointed clinical assistant professor at Renaissance School of Medicine, where she worked at the Treatment Resistant Depression Clinic. She was involved in teaching medical students and residents, and was part of various research studies and publications. Dr. Park treats a variety of psychiatric disorders in adults, including depression, anxiety, and PTSD. She does not treat patients with ADHD. She emphasizes a patient-centered approach and believes that best treatment outcomes result from a strong therapeutic relationship between a patient and a psychiatrist. She offers medication management and therapy through telehealth sessions. She offers sessions in both English and Korean.

John Ewing, MD

Staff Psychiatrist

Dr. Ewing is a board-certified psychiatrist who did his undergraduate degree at the University of Texas in Austin, Texas, and then completed his medical training at the University of Texas, in Houston, Texas, where he was inducted into the AOA honor society. After a medical internship in Seattle, he did his psychiatric residency at the University of California, San Diego where he was chief resident. He went on to complete a child and adolescent fellowship at Columbia University in New York, where he was also chief resident, and earned additional board certification in addiction psychiatry.

Over the past twenty plus years, Dr. Ewing has worked with adolescents, adults and families as the Director of Psychiatry at the Wellspring Foundation, a residential treatment facility in Connecticut, where he spent his time treating patients and supervising therapists. For more than a decade he taught Child and Adolescent Psychiatry residents at Columbia University, and has been in private practice in New York and CT. The length of his experience helps him in understanding the treatment of bipolar disorder, major depression, OCD and anxiety disorders, as well as substance use disorders and eating problems and how they evolve over time. He is an expert in the medical management of these disorders. He is a careful listener and a real person, with a wry sense of humor.

Miranda Brumber, LMHC

Staff Licensed Mental Health Counselor

Miranda Brumber is a licensed clinical mental health counselor with extensive experience working in the mental health field. Miranda has worked directly with clients of various demographics, living with a variety of mental health conditions. Miranda attended undergraduate school in Albany, NY, graduate school in Oswego, NY, and attended an internship abroad in London, UK; she continues to travel and obtain knowledge through these experiences. Miranda has been practicing for 3 years as a Clinical Mental Health Counselor, focusing on mood disorders and chronic challenges including health and physical ailments, which may hinder daily life. Working with Miranda, treatment is tailored to the individual, as great effort is put into choosing the treatment modality that fits the individual's personal struggles. Miranda uses an eclectic approach with a foundation in cognitive behavioral therapy and rational-emotive behavioral therapy, which are intertwined with mindfulness stemming from her personal practices with yoga and meditation.

Bryce Thacker, PMHNP

Education and training

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