57 Bedford St., Lexington, MA 02420

Group Leaders

Meet the Group Leaders for group therapy sessions.

Jason Krompinger, PhD

Jason Krompinger is a clinical psychologist who specializes in treating obsessive-compulsive disorder and related disorders. He works as an Assistant Psychologist and Senior Research Associate at the MGH/McLean OCD Institute in Belmont, MA, where he also maintains a small private practice. He also holds a faculty appointment at Harvard Medical School and is deeply involved in the clinical training of interns, post-doctoral fellows, and early-career psychologists. As part of Dr. Crowley's practice, he runs treatment groups that are geared towards undermining emotional avoidance, worry, rumination, and perfectionism.

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Julie McCarthy, Ph.D.

Julie McCarthy is a clinical research fellow at McLean Hospital/Harvard Medical School. She recently completed her Ph. D. in clinical psychology, and she specializes in the study and treatment of social, motivation, and emotion regulation difficulties of older adolescents and adults with schizophrenia and related disorders, including depression and bipolar disorder. She has experience conducting individual and group psychotherapy across a variety of outpatient, partial hospitalization, and inpatient settings. Dr. McCarthy approaches treatment from a Cognitive Behavioral Therapy (CBT) framework that incorporates skills and principles from Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), and Motivational Interviewing to provide individualized and recovery-oriented services. Dr. McCarthy has a small private practice, and she runs treatment groups targeting the development of DBT skills, ACT skills, and motivational enhancement for Dr. Crowley’s practice.

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Stéphanie Boyer, PhD

Dr. Stéphanie Boyer is a Licensed Clinical Psychologist, with appointments at McLean Hospital and Harvard Medical School. She received her Ph.D. in Clinical Psychology from Queen’s University (Kingston, Ontario, Canada), and then completed a one-year Postdoctoral Fellowship at the Klarman Eating Disorders Center at McLean Hospital, where she continues to provide individual and group therapy services. Dr. Boyer is experienced in providing psychological services to adolescents and adults across residential, partial hospital and outpatient settings. She has particular research and clinical expertise in the assessment and treatment of women’s health concerns, including eating disorders and female sexual dysfunctions. Dr. Boyer's approach is collaborative and client-centered, targeting symptom reduction and improved quality of life. Her practice is grounded within the biopsychosocial model, and she primarily uses Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), and Dialectical Behavior Therapy (DBT) interventions. Dr. Boyer has a small private practice, as well as running eating disorder groups in Dr. Crowley's practice.

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Caitlin Nevins, Ph.D.

Dr. Caitlin Nevins is a Postdoctoral Clinical Fellow at McLean Hospital/Harvard Medical School. Dr. Nevins received her Ph. D. from The California School of Professional Psychology and is currently working in the College Mental Health Program at McLean Hospital. Dr. Nevins is experienced in providing individual and group psychotherapy across inpatient, residential, partial, and outpatient settings. Her primary clinical and research interests are in the areas of eating disorders and trauma. She is also experienced in working with adults and adolescents with substance abuse, mood/anxiety disorders, and personality disorders. Dr. Nevins has a small private practice where she draws from techniques of cognitive behavioral therapy (CBT), acceptance and commitment therapy (ACT), and motivational interviewing (MI). Dr. Nevins will be running groups for the practice related to anxiety, depression and eating disorders.

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Dr. Crowley has been a life changing resource for me. I am diagnosed with OCD and am recovering from an eating disorder as well. When I am meeting w ... - Anon, Boston MA


Articles of Interest

Crowley, M. J. & Olivardia, R.  (2002).  What coaches should know about the treatment of eating disorders in female athletes.  N ...

Q & A

What kinds of insurance do you accept?

Although we are not currently on any insurance panels for either individual or group psychotherap ...



Mary Ellen Crowley, Ph.D.
Assistant Psychologist
McLean Hospital

Instructor of Psychology
Department of Psychiatry
Harvard Medical School




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57 Bedford Street, Suite 230
Lexington, MA 02420