Senior Helpers San Francisco and the Peninsula Share: Senior Helpers San Francisco and the Peninsula Visit Website 36 42nd Ave. San Mateo, CA 94403 (650) 343-6770 (650) 343-6772 (fax) Facebook About Map About Nurse Owned and run home-care business for Seniors and People with Disabilities. Established in 2007 we provide the highest quality in home care in the San Francisco Bay Area What's Nearby? Distance: 5 10 15 20 25 50 mi.