IRS Office Phone # Address
Walnut Creek (925) 974-3898 185 Lennon Ln.
Walnut Creek, CA 94598
Oakland (510) 907-5000 1301 Clay St.
Oakland, CA 94612
San Jose (408) 283-1569 55 S. Market St.
San Jose, CA 95113
San Francisco (415) 553-8990 450 Golden Gate Ave.
San Francisco, CA 94102
Stockton (209) 476-7501 4643 Quail Lakes Dr.
Stockton, CA 95207