Dr. Klein is a graduate of Yale and Cornell University Medical College and completed his residency at New York Hospital. He completed his Gastroenterology fellowship at Temple University Hospital in Philadelphia, PA.
He has volunteered his time as Assistant Clinical Professor of Medicine for the Mount Sinai School of Medicine, for the Closter Police Department as Police Surgeon and as the school physician for Cresskill Public Schools. Dr. Klein also holds a faculty appointment at Mt. Sinai, volunteering to teach medical residents at Englewood Hospital, an affiliate at Mt. Sinai.
Dr. Klein helps treat patients for a wide variety of medical issues including gastroesophageal reflux disease, peptic ulcer disease, colorectal cancer, inflammatory bowel disease, irritable bowel syndrome, and chronic hepatitis.