Meet Our Weight Loss Surgery Professionals
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Our Multidisciplinary Team
Our fellowship-trained surgeons are supported by a multidisciplinary team of experienced and caring weight loss surgery professionals.

Edward Hatchigian, MD
Bariatrician (Medical Weight Loss)
- Medical Director of the Weight Loss Surgery Program at Beth Israel Deaconess Medical Center
- Specially trained in nutrition and management of patients with obesity
- Graduated Harvard Medical School and completed internship and residency programs at Deaconess Hospital in Boston
- Completed advanced fellowship program on the Nutrition Support Service of the Departments of Medicine and Surgery at Deaconess Hospital

Angela Fenton, MA, LMHC
Senior Director Clinical Integration, Program Director, Mental Health Practitioner
- Received BA with honors in Psychology at University of Massachusetts, Amherst
- Received dual master’s degrees in Mental Health and Behavioral Medicine from Boston University School of Medicine
- Member of American Society for Metabolic and Bariatric Surgery
- Has worked with weight loss surgery patients since 2004

Melissa L. Ganz, MS, RD, LDN
Dietitian
- Received BS in Culinary Nutrition from Johnson & Wales University, Providence RI
- Received Master’s of Science in Nutrition and Health Promotion, Simmons College, Boston, MA
- Member of the American Dietetic Association, American Society for Metabolic and Bariatric Surgery and Dana Farber Leadership Counsel
- Has worked with weight loss surgery patients since 2007

Melanie Baker, MS, RD,LDN
Dietitian
- Received Bachelor’s of Science in Nutritional Science, University of New Hampshire, Durham, NH
- Received Master’s of Science on Nutrition, Boston University, Boston, MA
- Almost 20 years of experience in the nutrition field.

Deizy Mendes, BSN, RN
Bariatric Clinical Nurse
- Received Associate’s Degree in Nursing from Laboure College, Milton, MA
- Experience working in the healthcare field since 2005

Amy Morrison, MS
Operations Manager
- Received Bachelors Degree in Business Administration from Northeastern University
- Received Masters Degree in Healthcare Management from Northeastern University
- 15 years of experience in healthcare field

Mary Beauregard, RN
Bariatric Surgery Clinical Reviewer
- Received Bachelor’s of Science in Nursing from University of Massachusetts, Boston
- Completed Master’s of Science in Nursing Administration/Business Management from Regis College, Weston, MA
- Extensive bedside nursing experience in a variety of clinical areas including cardiac rehab, operating room and emergency department

Sue Walker, LICSW, MSW
Bariatric Social Worker
- Received her Bachelor’s Degree in Arts from American University, Washington, D.C.
- Earned her Master’s Degree in Social Work from Rutgers University
- Licensed independent clinical social worker in the state of Massachusetts for the last 19 years

Cecelia Pukt
Program Coordinator
- Completed a Bachelor’s of Science in Psychology, Bridgewater State University, Bridgewater, MA
- Completed Master’s of Science in Management in Healthcare Administration, Southern New Hampshire University
- Experience working with weight loss surgery patients since 2014
Phone: 617-313-1440
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