College of Physicians and Surgeons of Ontario

The College of Physicians and Surgeons of Ontario (CPSO) is the regulatory agency for medical care in the province of Ontario, Canada. The CPSO is under the oversight of the Health Professions Review Board.

Ontario is the most populous province in Canada, with more than 13,000,000 inhabitants, so the CPSO regulates the health care of more than 1/3 of Canadians.