Breast Health Center at California Pacific Medical Center Breast Health Center at California Pacific Medical Center 3698 California Street San Francisco, CA 94118 Phone: (415) 600-6474 Fax: (415) 221-4835 Hours of Operation: Monday, 9:00am - 5:00pm Tuesday - Thursday, 8:00am - 4:00pm Friday, 7:30am - 7:30pm Services Offered: Breast Ultrasound, Breast Biopsy & Intervention, Mammography Click here for directions