About

Dr. John Costable has been in practice as a Gastroenterologist since 1998. After graduating with his doctorate degree from Stony Brook University School of Medicine, Dr. Costable completed his residency in Internal Medicine at the University of Massachusetts Medical Center. He then moved to North Shore University Hospital for his fellowship in Gastroenterology. Dr. Costable is certified by the American Board of Internal Medicine in Gastroenterology.