John Whittier, MD

Dr. Sophia Mikityanskiy is a board-certified psychiatrist with extensive experience in outpatient and psychiatric emergency settings in Brooklyn, where she served a diverse patient population. She earned her medical degree from the New York Institute of Technology College of Osteopathic Medicine and completed her adult psychiatry residency at Maimonides Medical Center, where she was Chief of Outpatient Psychiatry. Dr. Mikityanskiy spent six years as Associate Program Director and Director of Medical Student Education, mentoring future clinicians and leading initiatives to support mental health professionals.

Dr. Mikityanskiy creates a warm, supportive environment where patients feel heard and understood. She is collaborative, culturally sensitive, and integrates talk therapy with lifestyle interventions to address mental health holistically. She is thoughtful, detail-oriented, and values open communication to develop clear, personalized treatment plans with each patient.

Dr. Mikityanskiy begins with a comprehensive initial evaluation, listening closely to patient concerns, medical and psychiatric history, and treatment goals. She then develops an individualized plan, incorporating lifestyle modifications and shared decision-making. Throughout care, she remains actively involved, continuously adjusting plans to ensure patients feel informed and empowered.

Dr. Absar Tahir is an adult psychiatrist double-boarded in psychiatry and internal medicine who specializes in evidence-based, holistic, and individualized care. He graduated from the University of Alabama at Birmingham, where he earned both his undergraduate and medical degrees. Dr. Tahir completed sequential residency training in both internal medicine at the Mayo Clinic in Rochester, Minnesota, followed by psychiatry at Emory University in Atlanta, Georgia. Dr. Tahir integrates his knowledge of psychiatry and internal medicine to address the complex interplay between mental and physical health, ensuring a comprehensive and thoughtful approach to diagnosis and treatment. Throughout his career, he has helped patients from all walks of life, from diverse backgrounds, with a compassionate and empathetic treatment style. He strives to ensure his patients feel their voice is heard while working collaboratively towards achieving their treatment goals. As a psychiatrist, he specializes in the treatment of depression, anxiety disorders, bipolar disorder, obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and attention-deficit/hyperactivity disorder (ADHD). He is also highly experienced in treating psychiatric problems in patients with medical comorbidities.

Dr. Jennifer Hailey is a board-certified psychiatrist in Psychiatry. She completed her undergraduate training at Michigan State University followed by medical school at Nova Southeastern University College of Osteopathic Medicine. She has completed a residency in psychiatry at Michigan State University. Dr. Hailey has worked in many different settings including private hospitals, jails, military treatment facilities and private practice. She enjoys educating her fellow providers who specialize in psychiatry as well as other areas of medicine. She has a genuine interest in treating a vast array of psychiatric disorders including depression, anxiety, post-traumatic stress disorders, obsessive compulsive and personality disorders. She also has experience in treating patients with medical comorbidities and has training in issues related to women's health.

Dr. Mattern is board certified in Adult psychiatry. Her approach to mental health is integrative, with the utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.

Dr. Mattern’s practice focuses on medication management along with elements of therapy from different modalities, such as supportive and cognitive behavioral therapy that are patient-tailored.  Dr. Mattern understands the importance of psychotherapy and may ask to bring in a therapist into your treatment team to provide the best care and outcome. Her clinical interests include depression, bipolar disorder, anxiety disorders, post-traumatic stress disorder, panic disorder, OCD, and ADHD.

After completing her undergraduate degree in Biology at Ohio Northern University, Dr. Mattern received her medical degree from Ohio University Heritage College of Osteopathic Medicine. She went on to complete her residency in psychiatry at The Ohio State University Medical Center.  She also completed yoga teacher training and presented nationally at the APA in 2019 regarding the benefits of yoga for depression.  Dr. Mattern is a member of the American Psychiatric Association, Ohio Psychiatric Physician’s Association, and Psychiatry Society of Central Ohio.

Dr. Mattern is board certified in Adult psychiatry.  Her approach to mental health is integrative, with utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.  Dr. Mattern’s practice focuses on medication management along with elements of therapy.

Svetlana Schwartz, PMHNP, is a board-certified psychiatric nurse practitioner with 18 years of experience in outpatient psychiatry. She provides care for individuals with a wide range of mental health conditions, including depression, anxiety, substance use disorders, ADHD, bipolar disorder, OCD, schizoaffective disorder, and schizophrenia.

Her practice focuses on medication management, often combined with supportive or cognitive behavioral therapy. Svetlana earned her Master of Science in Nursing with a specialty in adult psychiatry from the University of Massachusetts Lowell and her Bachelor of Science in Nursing from the University of Massachusetts Boston. She is trained in psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

Over the past 18 years, Svetlana has gained extensive experience evaluating and treating adults in outpatient settings. She previously worked at Arbour HRI Outpatient Clinic in Massachusetts and, for the past decade, has served patients at Memorial Healthcare System in Florida.

Svetlana believes that addressing mental health is just as important as addressing physical health. At Memorial Healthcare System, she collaborated with the Mind-Body Wellness Clinic to support both the medical and psychiatric needs of her patients. She has also contributed to the training of psychiatric and internal medicine residents in outpatient psychiatry. Her approach emphasizes the integration of medication management with individual therapy to provide comprehensive, patient-centered care.

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For the past 20 years, Dr. Lavin has worked at the University of Denver Health and Counseling Center, where she has treated undergraduate and graduate students. She also worked at a training clinic for students pursuing their PsyD degree. She has supervised and taught psychiatry residents. She taught a psychopharmacology and differential diagnosis course to psychology trainees. Dr. Lavin has a strong interest in functional medicine and alternative therapies. Dr. Lavin has been in practice for 35 years. She is board certified in adult psychiatry. Dr. Lavin focuses on a comprehensive medical assessment, medication management, psychoeducation, wellness, and alternative therapies. She enjoys treating young adults. Dr. Lavin did her undergraduate work at the University of Rochester. She earned her MD from Cornell University Medical College in New York City. Her psychiatry residency was at the University of Boston Medical Center. After training, Dr. Lavin held administrative and clinical positions at Kaiser Permanente in Denver, CO and at the Harvard Community Health Plan in Braintree, Massachusetts. She has written clinical triaging guidelines and patient information pamphlets.‍