Treatment & Services

West End Clinic: Our staff members provide addiction treatment services and counseling.

Staff Information/Biographies

Gregory Acampora MD
Jennifer Blewett LCSW, Clinical Care Coordinator
Marc G. Bolduc, MSW, LICSW
Lorraine Celata LICSW
Amy Colozzo, LICSW
Lisa Du Breuil, LICSW
Margaret Harvey PsyD, Associate Director
Karsten Kueppenender, MD, Associate Medical Director
Cally Lilley, APRN-BC, NS
Maureen P. McCarthy, MHA, Operations Manager
Rachel Meyers-Weinerman, Patient Services Coordinator
Estee Sharon, PsyD
Georgia Stathopoulou, PhD
Carlos Suarez, M.D.
Juliana Tilleman, Intake Coordinator
Stephanie Troy LICSW
E. Nalan Ward, MD, Medical Director



Jennifer Blewett, LICSW

Jennifer Blewett is a Licensed Clinical Social Worker and is a Certified School Social Worker for grades K-12. She earned her Masters degree in Clinical Social Work from Boston College School of Social Work in 2010. She has worked in the mental health profession since 2007 and has experience treating individuals, couples, and families with psychological problems in various inpatient and outpatient settings. Her areas of interest include the treatment of addictive behaviors, co-occurring psychiatric disorders, social skills training and related health and social problems. She has had training in Cognitive Behavior Therapy (CBT), Motivational Interviewing and Group Psychotherapy. Jennifer is dedicated to helping patients transform their lives through a cognitive behavioral structure, and to both pursue and achieve their personal and therapeutic goals.

Jennifer provides both individual and group psychotherapy, in addition to group facilitation. She leads the Readiness group, Computerized Cognitive Behavior Therapy (CBT) group and co-leads the “New Start, What’s Next” process group for patient’s in transition with their treatment at the West End. As the Clinical Care Coordinator at the West End Clinic, Jennifer also facilitates organization of the Day and Evening IOP programs. She is currently a member of the National Association of Social Workers (NASW), Association of Group Psychotherapy (GPA) and the Northeastern Society for Group Psychotherapy


Marc BolducMarc Bolduc, MSW, LICSW

Marc G. Bolduc is a Licensed Independent Clinical Social Worker and has worked in the mental health profession since 1994. He has experience treating individuals, couples, and families with psychological problems in various inpatient and outpatient settings. He is committed to guiding people who are concerned about becoming healthier, who have challenges with motivation, and who struggle with self-directed behavior change. His areas of interest include the treatment of addictive behaviors, co-occurring psychiatric disorders, and related health and social problems.

He has an enduring enthusiasm to the mission of educating and developing practitioners in the application of effective treatment for addiction. He is a clinical field supervisor for Boston College Graduate School of Social Work and Simmons College School of Social Work. He has been on staff at Massachusetts General Hospital, Department of Psychiatry, West End Clinic since 2004. He holds positions in Addiction Services and Inpatient Consultation Liaison Psychiatry Service. He conducts individual, couples, and group therapy at the West End Clinic’s Outpatient Practice and provides addiction consultations on the MGH inpatient medical/surgical units.

His academic degrees include a Bachelor of Arts in Psychology and Social Work from Westfield State College, and Master of Social Work from the Boston College Graduate School of Social Work. He is a member of the following professional associations: National Association of Social Workers, National Association for Addiction Professionals, & Association for the Advancement of Social Work with Groups, Inc.


Lisa Du Breuil, LICSW
Lisa earned her MSW at Boston University and has 10+ years experience working with dual-diagnosis patients. She currently sees people for initial assessments, ongoing individual therapy and leads the psycho-educational groups for the Intensive Outpatient Program here. Prior to joining the West End Clinic, Lisa worked with adolescents with a wide variety of behavioral challenges and their families. While Lisa enjoys helping patients with all sorts of life challenges, she is particularly interested in treating people who are dealing with addictions as well as eating disorders/food concerns.


Cally Lilley, APRN-BC
Cally Lilley, APRN is currently a Psychiatric Mental Health Clinical Nurse Specialist at The Massachusetts General Hospital. She has been working at MGH in the Department of Psychiatry since graduating from The MGH Institute of Professions in 2008. Cally began working at MGH Monument Street Counseling Center (a community-based mental heath center), and helped in its initial years and development. She joined the West End Clinic, Outpatient Addiction Services in 2008 and has worked with the Intensive Outpatient Program, Psychopharmacology, group therapy and the Office-Based Opioid Substitution Program. Cally recently became the Associate Clinical Director for the Young Adult Intensive Outpatient Program at the West End Clinic. She joined the Home Base Program (a newer program at MGH treating Veterans with Post-traumatic Stress Disorder and/or Traumatic Brain injury) in January 2011. Cally completed her Master’s of Science degree at MGH Institute of Professions. She has presented nationally for the Contemporary Forums Conferences and has co-authored 3 articles. Her areas of interest are dually diagnosed patients, opioid substitution therapies, and Veterans with PTSD. She is board certified in both adult psychiatry, and is eligible for Primary Care board certification as well.