To donate online, please use our form: Giving to UCSF. To donate by mail, please send a check payable to "UCSF Foundation / PFCSC" to: UCSF Foundation. Patient and Family Cancer Support Center. P.O. Box 45339. San Francisco, CA 94145-0339. For more information or to donate with a credit card by phone, call (877) 499-UCSF or (877) 499-8273..