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HASC Regional Offices
HASC Headquarters / Los Angeles Office
515 South Figueroa Street, Suite 1300
Los Angeles, CA 90071-3300
Phone: (213) 538-0700
Orange County
12399 Lewis Street, Suite 103
Garden Grove, CA 92840
Phone: (714) 663-0294
Patient Access Services Office
12383 Lewis Street, Suite 101
Garden Grove, CA 92840
Phone: (714) 750-0788
San Bernardino / Riverside
2280 Market Street, Suite 250
Riverside, CA 92501
Phone: (951) 222-2284
Santa Barbara / Ventura
515 South Figueroa Street, Suite 1300
Los Angeles, CA 90071
Phone: (805) 679-1717