Cal. Welf. & Inst. Code § 14184.300
(a)
(b)
(4) Subject to subdivision (f) of Section 14184.102, a hospital that is operated by the University of California, and its affiliated and contracted providers, may elect to participate as a GPP system during the CalAIM terms by providing written notice to the department no later than June 1 of the calendar year immediately preceding the subject GPP program year.