After college at Duke University and medical school at Georgetown University, Dr. Johnson served an internship at the U.S. Public Health Service Hospital in San Francisco as a commissioned officer. He then practiced Family Medicine in Sandstone, Minnesota. He served an orthopaedic surgery residency at the Mayo Clinic in his hometown of Rochester, Minnesota. Following residency, he was a fellow in Foot and Ankle Surgery at the University of Texas, Houston, under the direction of Donald E. Baxter, M.D. He joined the full-time faculty in the Department of Orthopaedic Surgery at the Medical College of Wisconsin in Milwaukee where he served from 1989 until his appointment to the full-time faculty at Washington University School of Medicine in 1996.
Currently, Dr. Johnson is a Professor of Orthopaedic Surgery, Chief of the Foot and Ankle Service and Director of the Orthopaedic Foot and Ankle Fellowship Program at Barnes-Jewish Hospital at Washington University Medical Center. He is also on the consulting staff of the Shriners Hospital for Children in St. Louis.
Dr. Johnson serves as the Immediate Past President on the Board of Directors of the American Orthopaedic Foot and Ankle Society, a 2,200 member national organization of board certified orthopaedic surgeons who specialize in the surgical and nonsurgical treatment of all types of foot and ankle disorders.