Dr. David Barenberg is an experienced and skilled gastroenterologist with lifetime board certification after training at the Harvard Medical School gastroenterology department at the Brigham and Women's Hospital in Boston. An expert in colonoscopy and endoscopy, he is also equally respected for his diagnostic and disease management skills. He treats his patients with concern and respect. When mentoring junior physicians, he has often been heard to say, "when you are caring for patients, you must always do your very best, every time. You must focus not only on the illness, but on the human being."