HSC § 127673.3

(a) The department shall develop and maintain a master person index, a master index of providers and suppliers, and a master payer index that will enable the matching of California residents longitudinally and across coverage sources, and will enable the matching of providers and suppliers across practice arrangements, payment sources, and regulators.

(b) The department shall supplement these indices with data from other public and private sources, such as the following:

(1) Other data maintained by the department.

(2) Vital statistics.

(3) Facility licensure data from the State Department of Public Health.

(4) Health professional licensure data from the Department of Consumer Affairs.

(5) Private sources of valid and reliable data, such as a provider and supplier directory utility if it is demonstrably accurate over time.