Phone 203-792-0400 l Fax 203-792-0404


Donald Ammerman, M.D.

Dr. Ammerman joined CPC Associates in 2009 upon completion of Postdoctoral training in Psychiatry at Dartmouth Hitchcock Medical Center. He is a graduate of the University of Connecticut School of Medicine. He is licensed to provide psychiatric services in VT and CT.

Dr. Ammerman has done research on infectious diseases and co-morbidities and etiologies in mental illness and on the genomics and proteomics of psychiatric illness. He has been an instructor of medical students at Dartmouth College and Medical Director of the Clara Martin Center Criminal Justice Weekend/DWI Program at the White River Junction VA Hospital. His experience includes specialty work with college-age students and patients with addictions.

Dr. Ammerman establishes a strong working relationship with his patients, providing a framework for treatment that includes medication management and psychotherapy. His work encompasses the full range of psychiatric modalities, some of which include anxiety, dependencies, depression, mood disorders, OCD, panic, and stress.

Jessica Chaudhary, M.D.

Dr. Jessica Chaudhary is a Board Certified psychiatrist and a diplomate of the American Board of Psychiatry and Neurology. She completed her undergraduate studies at Wellesley College with Honors. Being a Seattle native, she returned to medical school at the University of Washington School of Medicine and then completed her residency in psychiatry at Yale University. Currently, she is also pursuing a fellowship in psychosomatic medicine at Harvard Medical School, where she is gaining special expertise in treating co-morbid complex medical conditions and psychiatric disorders. Dr. Chaudhary has been a health policy fellow at the State Department in Washington, D.C., where she was involved in influencing national mental health policy, and has published about her fellowship experiences.

In addition to her private practice at CPC, she is on staff at Yale New Haven Hospital and Waterbury Hospital, and is a member of the American Psychiatric Association and the Academy of Psychosomatic Medicine. She has treated patients with anxiety disorders, depression, bipolar disorder, obsessive compulsive disorder, eating disorders, and substance disorders. Currently, she is co-authoring a book chapter on endocrine disorders and psychiatric disease.

Dr. Chaudhary is fluent in both the psychopharmacologic and psychotherapeutic approaches to co-morbid psychiatric and medical conditions. She is also interested in medical ethics and ensuring mental health care is as accessible as physical health care. She has unrestricted licenses to practice medicine in Connecticut and Massachusetts.

Anton Fry, M.D.

Dr. Anton Fry is a Board Certified psychiatrist and the founder of CPC Associates, Inc. Dr. Fry received his medical degree from the Faculty of Medicine University of Ceylon in Sri Lanka. After moving to the United States, Dr. Fry did a rotating internship at Fordham Hospital (Bronx, NY) followed by psychiatric residencies at Fairfield Hills Hospital (Newtown, CT), Yale University (New Haven, CT) and Stamford Hospital (Stamford, CT).

Dr. Fry was Chief resident and Staff Psychiatrist at Fairfield Hills State Hospital and a Psychiatric Consultant at Danbury Hospital and Bridgeport Mental Health Center as well as Medical Director of Methadone Program for the City of Bridgeport, CT.

"One of the Best Doctors in Connecticut" by Connecticut Magazine and has been peer-voted one of America's Top Psychiatrists", "America's best Doctors" and "America's Top Doctors" several times in the past 10 years.

Allison Hayes, APRN

Allison Hayes is a Board Certified Psychiatric Mental Health Nurse Practitioner, with full prescriptive authority. Allison worked at Yale New Haven Hospital on an adolescent psychiatric unit and at Center for Discovery, a residential eating disorder facility for women. Allison’s various work experience, clinical rotations, and education had her working with children, adolescents, and adults with various arrays of mental health issues.

She completed her undergraduate studies at The University of Scranton where she received a Bachelors of Science in Nursing. She began her nursing career working in the Pediatric Intensive Care Unit. It was during this time, through her interactions with patients, that she saw the effects mental health can have on physical health and vice versa. A need for mental health providers was apparent and led her to continue her education, earning her Masters of Science from Fairfield University.

Her nursing background is unique in her approach to patient care, treating the patient in a holistic manner and understanding the significance mental health has on all aspects of life.

Jessica McGroarty, APRN

Jessica McGroarty is a Board Certified Psychiatric Mental Health Nurse Practitioner, with a Masters of Science in psychiatric nursing from Fairfield University; she has full prescriptive authority. After earning her Bachelor of Arts degree in psychology from The University of Iowa, Jessica went on to become a registered nurse studying at St. Vincent’s College.

Prior to joining CPC Jessica worked as a registered nurse at St. Vincent’s Medical Center on the adult inpatient psychiatric unit, where she was also head nurse of electro-convulsive therapy procedures. Additionally, she worked at Bridgeport Hospital on the adult and geriatric inpatient psychiatric units, and in the emergency crisis department. While pursuing her MS, she had the opportunity to provide services at The Reach Program in Stratford, where she worked with children and adolescents, and Life Bridge Community Center in Bridgeport, working with adults.

Jessica is dedicated to getting to know her patients to ensure they are receiving comprehensive and compassionate care.

Tamar Mathias, M.D.

Double board certified in Adult Psychiatry and Child and Adolescent Psychiatry, Dr. Mathias is known by patients and colleagues for her deep expertise, kindness and care. She meets each patient where they are and works tirelessly to take them where they want to go.

Dr. Mathias joined CPC after 8 years as a Clinical Instructor of Psychiatry and Attending Emergency Room Psychiatrist at Montefiore Medical Center in Bronx, NY. She was also the attending psychiatrist at Montefiore’s Family Health Center and a Consulting Child and Adolescent Psychiatrist for Montefiore’s Child Advocacy Center.

For the past 8 years, Dr. Mathias has maintained a thriving private practice in Manhattan. Since moving to Connecticut, she continues to see her patients there one day a week.

Dr. Mathias’s diverse background allows her expertise in treating children, adolescents and adults with a wide range of issues including but not limited to anxiety, depression, ADHD, OCD, mood disorders, panic disorders, and eating disorders.

Dr. Mathias completed her residency and fellowship at Mount Sinai School of Medicine in NYC and it was there that she won the prestigious AACAP Outstanding Child and Adolescent Psychiatric Resident Award. She received her MD from the Sackler School of Medicine in Tel Aviv, Israel and graduated college with Honors from the University of Wisconsin-Madison.

Passionate about teaching the next generation of doctors, Dr. Mathias was a lecturer of Child and Adolescent Psychiatry at Montefiore Medical Center and at the Mount Sinai School of Medicine. She’s also published in Psychiatric Pearls on Anorexia Nervosa.

Dr. Mathias’s extensive experience allows her to give patients the highest level of care. She recognizes that each person who comes through her door is an individual with unique needs and goals. Her aim is to best serve every patient.

Tarique Perera, M.D.

Dr. Perera has been working at CPC Associates of Danbury since 2001 providing expert medication evaluations and psychotherapy. He is considered an expert psycho-pharmacologist and is annually rated one of the Best Doctors in America. Dr. Perera gives several lectures a year to other psychiatrists and primary care physicians on the use of medications for depression, anxiety disorders, bipolar disorder, schizophrenia, attention deficit disorders, and substance abuse. Dr. Perera lectures in a weeklong training program at Columbia University that sets the Standards of Practice for both ECT and TMS practice worldwide and has trained and supervised psychiatry residents in psychopharmacology at Columbia University.

Dr. Perera is a graduate of Harvard Medical School and Psychiatric Residency at Columbia University, College of Physicians and Surgeons. Dr. Perera was an Assistant Professor at the Department of Psychiatry at Columbia University and the Director of Preclinical studies in the Department of Geriatric Psychiatry at the New York State Psychiatric Institute (NYSPI). He was awarded several research grants to study the role of new neurons (neurogenesis) in the hippocampus in the treatment of depression. His research showed that increasing neurogenesis was one of the essential core mechanisms for treating depression. It appears these new neurons normalize emotions by linking them appropriately to external environment. He is currently involved in several studies aimed at discovering the neurobiological target of antidepressants. Dr. Perera has won several prestigious awards for his work and has several publications. A review of Dr. Perera’s work on neurogenesis is available on in the journal Neuroscientist 2008.

As a member of the Division of Biological Psychiatry at Columbia, Dr. Perera has been at the forefront of a new treatment for depression known as Transcranial Magnetic Stimulation (TMS) therapy. This treatment is FDA approved for depression that has failed to respond to medication. Besides medication resistant depression, it has also shown some efficacy in the treatment of other disorders. In 2010 Dr. Perera founded Contemporary Care of Greenwich, with offices in Darien CT and Manhattan NY, offering TMS therapy. His work is noted in the International Journal of Neuropsychopharmacology in 2000, demonstrated at Contemporary Care of Greenwich, featured on the Dr. Oz show (see, and most recently in Discover Magazine’s The Year in Science on the top 100 Stories in Science for 2012 - "The Happiness App." Dr. Perera brings all this research, knowledge, and experience to his medical evaluations and psychotherapy at CPC Associates Inc.

Jeffrey Satinover, M.D., Ph.D.

Dr. Satinover is board-certified in adult and geriatric psychiatry, with a year of child psychiatry fellowship, all at Yale University. He has been in psychiatric practice since 1986 and is a diplomate Jungian psychoanalyst (Zurich).

Dr. Satinover holds degrees from MIT, Harvard, Yale, the University of Texas and the University of Nice where he earned a PhD in physics (complex systems theory) in 2009 with highest honors. He is the author of 50 articles, chapters and books including the best-selling "The Quantum Brain" (Wiley). He has been a Burroughs-Welcome Fellow of the American Psychiatric Association and a Lustman Research Prize winner at Yale. He has taught psychiatry, psychopharmacology and team-based treatment to non-MD therapists at the Jung Institute in Zurich and Behavioral Finance at the Lorange Business School also in Switzerland and continues to lead a one-week seminar per year. He has been a visiting faculty member at Princeton University, and at the Swiss Institute of Technology. He was Distinguished Visiting Professor at the King's College in New York and is a former William James Lecturer in Psychology and Religion at Harvard. Dr. Satinover served as Connecticut State Flight Surgeon (CTARNG) and as an Army Reserve psychiatrist. He is married and the father of five daughters.

"Psychiatry is a science, but above all, it is a humane art. Psychiatrists must rigorously apply the best in scientific and clinical research to help resolve distress as rapidly and effectively as possible. But truly good psychiatrists are above all collaborators with their patients, placing their needs first and walking with them through the good times and the bad."

Dr. Satinover sees children and adolescents from age 11 on up, and adults of all ages.