Painting of a man in formal, nineteenth-century clothing, in a gilded frame

Portrait of John Collins Warren, MD (1778-1856)

John Collins Warren was a preeminent surgeon and co-founder of MGH. He was also the first dean of Harvard Medical School, which his father helped to found. Warren was the first surgeon in the United States to operate for strangulated hernia. He was also the surgeon in the first successful public demonstration of surgical anesthesia on October 16, 1846 in the hospital’s operating amphitheater, now known as the Ether Dome.