Cal. Health and Safety Code § 1370.2

Upon an appeal to the plan of a contested claim, the plan shall refer the claim to the medical director or other appropriately licensed health care provider. This health care provider or the medical director shall review the appeal and, if he or she determines that he or she is competent to evaluate the specific clinical issues presented in the claim, shall make a determination on the appealed claim. If the health care provider or medical director determines that he or she is not competent to evaluate the specific clinical issues of the appealed claim, prior to making a determination, he or she shall consult with an appropriately licensed health care provider who is competent to evaluate the specific clinical issues presented in the claim. For the purposes of this section, “competent to evaluate the specific clinical issues” means that the reviewer has education, training, and relevant expertise that is pertinent for evaluating the specific clinical issues that serve as the basis of the contested claim. The requirements of this section shall apply to claims that are contested on the basis of a clinical issue, the necessity for treatment, or the type of treatment proposed or utilized. The plan shall determine whether or not to use an appropriate specialist provider in the review of contested claims.