Your Care Team

The Center for Weight Management and Bariatric Surgery is a multidisciplinary team of surgeons, medical doctors, dietitians, psychologists, nurses, and support staff committed to providing you with long-term comprehensive care and support. They are experienced, compassionate and your friend for life.

Physicians

Michael E. Jiser MD

Medical Director of the Bariatric Surgery Program and Perioperative Services, Surgeon

Roy R. Shen MD

Medical Director of the Trauma Program, Surgeon

Rebecca C. Shore MD

Surgeon

Wassim Mazraany MD

Chief of Surgery, Surgeon

Douglas C. Campbell MD

Surgeon

Clinical Leadership

Barbara Viens DNP, RN, ONC, CNML

Clinical Director of Orthopedics , Clinical Director of Bariatrics

Susan Seamans LPN

Practice Manager

Melissa L. Harvey FNP

Nurse Practitioner, Advanced Practice Nurse Supervisor

Care Providers

Paul R. O'Brien EDD

Psychologist

Ketna Patel PA-C

Physician Assistant

Jenny L. Hegmann MS, RD, LDN

Bariatric Dietitian

Alisa Himelfarb MS, RD, LDN

Bariatric Dietitian

Mary Decicco

Medical Assistant

Support Staff

Susan Dufresne

Bariatric Administrative Assistant

Darlene Fertitta

Bariatric Administrative Assistant

Melissa McLaughlin

Instructor

Nancy Mullin RN

Insurance Coordinator

Ashley Rolens

Patient Advocate and Medical Assistant

Bette Jo Toppin

Group Facilitator