Cal. Welf. & Inst. Code § 14115.41
(a) For services that are performed at a central laboratory as authorized pursuant to Section 1241.1 of the Business and Professions Code, the department shall provide reimbursement directly to the laboratory performing the services and submitting the claim for reimbursement. Nothing in this section shall prohibit a primary care clinic network that utilizes centralized billing from submitting claims on the behalf of the network’s central laboratory, if the claims are submitted with the central laboratory’s provider number. The department shall not deny payment to a laboratory created pursuant to Section 1241.1 of the Business and Professions Code, for either of the following reasons:
(d)
(1) A primary care clinic licensed pursuant to subdivision (a) of Section 1204 of the Health and Safety Code that is affiliated with a network of primary care clinics may continue to submit claims for the laboratory services provided until such time that the primary care clinic receives a provider number for the central laboratory pursuant to this section, if all of the following requirements are met: