Anthony Owen Parker gained MB BS at Sydney University in 1942. He was resident medical officer at Sydney Hospital in 1942-43 and at Prince Henry Hospital 1943-44. He came to London and in 1951-53 he was surgical registrar at Poplar Hospital. He was surgical registrar at Princess Beatrice Hospital in 1953-54. In 1952 he gained the Fellowship of the Royal College of Surgeons of England. He returned to Australia and was clinical assistant to the Royal North Shore and Royal Prince Alfred Hospitals in Sydney. He was honorary surgeon to Lidcombe Hospital and Fairfield District Hospital, Sydney. He served in the second world war and was in the Royal Australian Naval Reserve from 1944 to 1947. He was a Captain in the Royal Australian Army Medical Corps. He was a member of the Australian Medical Association. He died in March 1973.