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About me
Dr. Andrew Stefaniwsky is a fellowship-trained gastroenterologist with Atlantic Medical Group, diagnosing and treating a range of digestive disorders from irritable bowel syndrome to liver conditions. Dr. Stefaniwsky joins Atlantic Medical Group from private practice, The Medical Group PA, where he was a founding partner from the time it was established in 1982. After receiving his medical degree from Robert Wood Johnson Medical School, Dr. Stefaniwsky remained there to pursue his residency, served as chief resident. He continued for fellowship training at UMDNJ-New Jersey Medical School, where he also served as a clinical instructor. A leader in his field, Dr. Stefaniwsky has held positions that have included president of the New Jersey Endoscopy Society and chief of the Department of Gastroenterology at Irvington General Hospital. Board certified in internal medicine and gastroenterology, Dr. Stefaniwsky is a fellow of the American College of Gastroenterology and a fellow of the American College of Physicians. He is also a member of Phi Beta Kappa academic honor society. Dr. Stefaniwsky maintains professional membership in the American Medical Association, New Jersey Medical Society, American College of Gastroenterology and American Society of Gastrointestinal Endoscopy. His research in the use of Ursodeoxycholic acid in bile acid gastritis was published in The Gastroenterology Journal. Dr. Stefaniwsky is a participating provider of the Atlantic Accountable Care Organization.
SPECIALTIES
Gastroenterology
AFFILIATIONS
Atlantic ACO
Atlantic Medical Group
Chilton Medical Center
Overlook Medical Center
Where to see me
Education & Experience
TRAINING
Robert Wood Johnson Medical School
Medical School
Robert Wood Johnson - Rutgers
Residency
UMDNJ New Jersey Medical School
Fellowship
BOARD CERTIFICATIONS
Patient Reviews
4.8
- 5.0Jan 2, 2026My experience was excellent and I am very satisfied with my vare.
- 5.0Dec 17, 2025Dr Stefaniwsky Good experience at the colonoscopy consult.
- 5.0Nov 21, 2025Excellent.
- 5.0Nov 20, 2025Experience with Dr. Stefaniwski and staff was pleasant and professional. My wife and I were treated with respect and courtesy. My wife was particularly pleased with Dr. Steph calling him "Marcus Welby" referring to television character of years ago. I have been patient of Dr. Stephanewski for number of years performing colonoscopy on me.
- 5.0Nov 20, 2025Dr. Stefaniwsky is an exceptional doctor very caring and thoughtful with all his patients.
