Cal. Welf. & Inst. Code § 14576

Each adult day health care provider shall furnish to the department, unless otherwise specified by the interagency agreement entered into pursuant to Section 1572 of the Health and Safety Code, all additional information and reports that the department may find necessary in performing its functions under this chapter. The information and reports shall include, but not be limited to, any statistical information regarding utilization of services, individual treatment plans and individual service reports, costs of health care, and administration the department may require.