Following this journey, he managed to be placed as the director of a state-of-the-art neurosurgery unit situated at Callan Park which he convinced the New South Wales government to fund. Only two years later, he was appointed Superintendent of Callan Park, yet two years after, he made public allegations against the institution, claiming mismanagement, theft and mistreatmet of patients was occurring. The New South Wales Labor Government was then forced to hold a Royal Commission in 1961, and Harry Bailey subsequently became well known. His accusations, however, forced him to resign and move into private practice.
He did so at Macquarie Street, and then in 1963 began treating patients at Chelmsford Private Hosptital in Pennant Hills with the assistance of John Herron early on, then Ian Gardiner and John Gill later on. Throughout his time at Chelmsford Hospital, he experimented with Deep Sleep Therapy and Electroconvulsive Shock Therapy, and his high public profile enabled this.
His reputation emerged from being a member of the Australian Medical Association from 1951, the Australasian Association of Psychiatrists (later known as the Royal Australian and New Zealand College of Psychaitrists) from 1952, the American Electroshock Research Association, and the Pan-Pacitif Surgical Association, as well as being the president of the Sydney Biophysics and Medical Electrocics Society