HICAP
Health Insurance Counseling Advocacy Program for Seniors (HICAP): 1-800-434-0222.
Medicare Offices in San Mateo County
Social Security Administration Offices
North County Office
355 Gellert Blvd, Ste 201, Daly City, CA 94015
1-888-748-7702
Central County Office
800 South Claremont St. San Mateo, CA 94402
800-772–1213
South County Office
601 Allerton Street, 2nd floor, Redwood City, CA 94063
650-579–4541