Dr. Simonsen is an Orthopedic Surgeon native to Long Island and works in the Bay Shore area. Prior to graduation from the George Washington University School of Medicine and Health Sciences in Washington, DC in 1976, he received his undergraduate degree from St. Lawrence University in 1972. He completed his internship and residency in General Surgery at George Washington University Hospital between 1976 and 1978, and his fellowship in Orthopedic Surgery in 1981 at the same hospital. In the past, he has served as Team Physician to St. John the Baptist High School. Currently he is the Assistant Chief of Orthopaedic Surgery at Good Samaritan Hospital Medical Center, and he is on the Consulting Staff at St. Catherine of Siena Medical Center in Smithtown, NY. Dr. Simonsen is also a Fellow of the American Academy of Orthopaedic Surgeons.