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

John Hwang MD

Surgeon

Douglas C. Campbell MD

Surgeon

Care Providers

Paul R. O'Brien EDD

Psychologist

Melissa L. Harvey FNP

Nurse Practitioner

Ketna Patel PA-C

Physician Assistant

Maribel Ortiz MSN, RN, PMHNP

Psychiatric Nurse Practitioner, Mental Health Consultant

Elizabeth Carroll Curtis MSN, RN, FNP-C

Nurse Practitioner

Elizabeth (Liz) Natale RD, LDN

Bariatric Dietitian

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

Jacqueline Eschle BSN, RN, CNOR, MBSAQIP SCR

Quality Improvement Specialist

Darlene Fertitta

Bariatric Administrative Assistant

Cynthia Marcano

Office Manager

Melissa McLaughlin

Instructor

Carol Mulligan

Bariatric Administrative Assistant

Nancy Mullin RN

Insurance Coordinator

Ashley Rolens

Patient Advocate and Medical Assistant

Susan Seamans LPN

Patient Advocate

Jonathan Suon

Patient Ambassador/Scheduler

Bette Jo Toppin

Group Facilitator