Cal. Welf. & Inst. Code § 4659
(a) Except as otherwise provided in subdivision (b) or (e), the regional center shall identify and pursue all possible sources of funding for consumers receiving regional center services. These sources shall include, but not be limited to, both of the following:
(d)
(1) Effective July 1, 2009, notwithstanding any other law or regulation, a regional center shall not purchase medical or dental services for a consumer three years of age or older unless the regional center is provided with documentation of a Medi-Cal, private insurance, or a health care service plan denial and the regional center determines that an appeal by the consumer or family of the denial does not have merit. If, on July 1, 2009, a regional center is purchasing the service as part of a consumer’s IPP, this provision shall take effect on August 1, 2009. Regional centers may pay for medical or dental services during the following periods:
(f) In order to best utilize generic resources, federally funded programs, and private insurance programs for individuals with developmental disabilities, the department and regional centers shall engage in the following activities: