About Me

Dr. Onopchenko graduated from Ursinus College with a B.S. in Biology in 1979 on the Dean’s Academic Honors list. He obtained his doctorate in medicine from the Medical College of Pennsylvania in 1984 with honors, completed a residency in general surgery at the University of Medicine and Dentistry of New Jersey in 1989, and has been a practicing general surgeon in Atlantic County since July of 1989.

Dr. Onopchenko is board-certified in general surgery, and is a fellow of the American College of Surgeons. He is also an active member of the American Society of Metabolic and Bariatric Surgery and presented a paper on identification of internal hernia after laparoscopic gastric bypass at the 2005 national ASMBS meeting and presented a paper on the use of antibotics in laparoscopic bariatric surgery at the Society of Laproendoscopic Surgery in Chicago in 2007.

Dr. Onopchenko is a member of the American College of Surgeons (fellow), The American Society of Metabolic and Bariatric Surgery (fellow), the Society of Laparoendoscopic Surgeons, the Society of Abdominal and Gastrointestinal Endoscopic Surgeons (SAGES), past president of the Medical Society of New Jersey, Atlantic County, and past president and member of the AtlantiCare Regional Medical Center Medical Staff. He was the first President of the newly formed NJ Society for Bariatric Surgeons, the NJ state chapter of the ASMBS, 2006-2008. Since 1990, Dr. Onopchenko’s special interest has been in minimally invasive surgery. He was one of the first surgeons to perform a laparoscopic cholecystectomy in Atlantic County, as well as performing other advanced minimally invasive laparoscopic procedures including appendectomy, inguinal, abdominal and paraesophageal hernia repairs, anti-reflux gastric surgery, gastric and colon surgery, and adrenal surgeries.

In March of 2002, Dr. Onopchenko founded the Center for Surgical Weight Loss & Wellness at AtlantiCare and has extensive experience in performing laparoscopic gastric bypass and adjustable gastric band surgeries. Dr. Onopchenko is also a member of the American Society of Bariatric Physicians and has passed both the written and oral exams leading to certification by the American Board of Bariatric Medicine, the only surgeon in Southeastern New Jersey to achieve this.

Dr. Onopchenko performs Laparoscopic Roux-en-Y Gastric Bypass, laparoscopic Adjustible Gastric Banding, laparoscopic sleeve gastrectomy and StomaphyX.