Cal. Code Regs. tit. 22, § 50142
(a) County departments that have established a procedure for screening potential applicants prior to application shall:
(3) Inform each person being screened of that person's rights under the Medi-Cal program, even if it appears that the person is ineligible. Rights of Persons Requesting Medi-Cal, MC 216, shall be explained to, and signed by, the person being screened.