• Dr. Robert Lustig is a board-certified internal medicine physician specializing in gastroenterology. He received a medical degree from Des Moines University. He completed both his internship and residency at JFK Hospital. Dr. Lustig then completed a fellowship in gastroenterology at Albany Medical College. Dr. Lustig is affiliated with the American College of Osteopathic Internists and the New Jersey Association of Osteopathic Physicians and Surgeons.