Cal. Welf. & Inst. Code § 10850.9
(a)
(2) If a county social services agency intends to disclose information pursuant to paragraph (1), it shall notify elderly or disabled individuals receiving services, at the time the individual is enrolled in services or at the time of the agency’s next contact with the individual, whichever comes first, of that fact. Beginning on January 1, 2022, the individual shall have the option to opt out of having their name, residential address, telephone number, and email address disclosed as described in paragraph (1).