Roger S. Klein, MD, FACP, has expertise in inflammatory bowel disease, diseases of the liver, colon cancer screening, gastroesophageal reflux disease, and gastrointestinal bleeding.

In addition to his position at Summit Health, Roger S. Klein, MD, FACP, is Section Chief in the Division of Gastroenterology and an attending gastroenterologist at Overlook Hospital in Summit, New Jersey. Dr. Klein also is an attending gastroenterologist at Mount Sinai Medical Center and an assistant clinical professor of medicine for Mount Sinai School of Medicine in New York City.

Before joining Summit Health, Dr. Klein practiced with Westfield Associates in Gastroenterology in Westfield, New Jersey. He a fellow of the American College of Physicians and he is a member of the American Medical Association, American College of Physicians, American Gastroenterological Association, American Society for Gastrointestinal Endoscopy.

Dr. Klein's interest in gastroenterology began during his residency at Mount Sinai, a leading institution in inflammatory bowel disease and liver disease. Dr. Klein notes, "I learned from the nationally recognized clinicians David Sachar, Asher Kornbluth, and Henry Bodenheimer." He adds, "I listen carefully to and empathize with my patients. I treat them with the level of care I expect for myself."

When he is not working with his patients, Dr. Klein enjoys running, skiing, and traveling.