APA reports that its membership is primarily medical specialists who are qualified, or in the process of becoming qualified, as psychiatrists. The basic eligibility requirement is completion of a residency program in psychiatry accredited by the Residency Review Committee for Psychiatry of the Accreditation Council for Graduate Medical Education (ACGME), the Royal College of Physicians and Surgeons of Canada (RCPS(C)), or the American Osteopathic Association (AOA). Applicants for membership must also hold a valid medical license (with the exception of medical students and residents) and provide one reference who is an APA member.