Physicians' Services Foundation (PSI Foundation) is an independent non-profit private foundation based in North York, Ontario. Established in 1970, by the physicians of Ontario with the original capital of Physicians Services, the doctor-sponsored prepaid medical care plan. The mission of the foundation is to improve the health of Ontarians and to provide grants for education of practising physicians and health research with an emphasis on research relevant to patient care. The investment assets of the foundation are managed by the finance committee.Physicians' Services Foundation's investment portfolio is valued at $109.64 million, with investments in real estate & infrastructure.