If the OP lives in California, there is a possibility that this physician was a MD/DO. In 1962 a California public referendum prohibited the granting of new licenses to DOs in the state. The College of Osteopathic Physicians and Surgeons, Los Angeles, was converted to an allopathic medical college (UC Irvine). This institution, upon receipt of $65 per applicant, granted some 2,500 MD degrees to DOs in that state, with the concurrence of the California Medical Association and the California Osteopathic Association. A long court fight was begun, which was resolved in 1974 when the California State Supreme Court ruled that licensing of DOs in that state must be resumed.