Rajeev Vohra, MD
Medical Director, Bariatric and Metabolic Institute
Dr. Vohra is Medical Director of the Bariatric and Metabolic Institute at South Nassau’s Center for Digestive Disorders and Metabolic Disease. He completed his medical education in India and his postdoctoral training at New York University Medical Center. He has also served as Assistant Professor in Surgery at Mount Sinai School of Medicine. Dr. Vohra is a member of the American College of Surgeons and the Society of American Gastrointestinal and Laparoscopic Surgeons.           

Gregory Nishimura, MD
Bariatric Surgeon
Dr. Nishimura attended medical school at Hahnemann University in Philadelphia, Pa. Additionally, Dr. Nishimura completed his surgical residency at Nassau County Medical Center and is a board-certified laparoscopic surgeon. Dr. Nishimura performs the LAP-BAND^®, Roux-en-Y surgeries, sleeve gastrectomies and other laparoscopic procedures. He is a member of the American Society of Bariatric Physicians, American Obesity Association and Obesity Action Coalition.

Robin Huang, MD
General Surgeon

Gabe Becchinelli, PA
Becchinelli has extensive experience as a Surgical Physician Assistant. He has been with South Nassau Communities Hospital since 2005 and is one of the most experienced PAs nationwide for LAP-BAND^® adjustments and follow-ups. He is a graduate of St. John's University.

Michael Houston, MD
Anesthesiologist

Danielle Solomon, RD, CDE
Solomon has been a registered dietitian since 1992. She has specialized in bariatric weight loss management, including the OPTIFAST^® program. Since 2001, she has worked closely with our bariatric patients, helping them along their weight loss surgery journey from the moment they arrive at our offices and throughout the entire process, encouraging them to stay on track. She is a graduate of C.W. Post College with a B.S. in nutrition, and she interned at Cornell Medical Center.

Jill Siegel-Loiacono, MS, RD, CDN
Siegel-Loiacono has been a registered dietitian since 1991. She has specialized in bariatric weight loss management, including medically supervised nutritional weight loss. She holds a bachelor’s degree in nutrition from State University of New York at Oneonta and a master’s degree in nutrition from C.W. Post College.

Renee Thompson, MSN, RN, FNP-BC, CNN
Bariatric Surgery Nurse Practitioner

Judy Summers, PA-C
Bariatric Coordinator

Alison Singer
Bariatric Patient Liaison

Maryann Simonetti
Program Assistant

Kim Libal
MBS Clinical Reviewer/Medical Assistant