Jon J. Hanlon, MD, is a fellowship trained hand and upper extremity surgeon. After receiving his medical degree, Dr. Hanlon continued his medical training in the United States Navy in San Diego, Calif. In 1979, he left the Navy as a Commander to start his own orthopedic and hand surgery practice. While on medical staff at Fountain Valley Regional Hospital in Orange County, Calif., a Level 1 Trauma Center, Dr. Hanlon was one of five members of the orthopedic trauma team, caring not only for patients with hand and upper extremity problems, but also for those with multiple and serious general orthopedic injuries. He is listed in Strathmore’s “Who’s Who.”