Pub. Contract Code, § 10518

(a) Except as otherwise provided in subdivision (b), each contractor who enters into a contract with a University of California campus for ten thousand dollars ($10,000) or more shall be assigned an identification number by the chancellor of that university campus. Each contractor who has been assigned a number shall list it on each contract the contractor enters into with the university campus, regardless of the amount of the contract. In the case of a corporation or firm, the chancellor’s assigned number shall be used exclusively on each contract with that particular chancellor’s campus. The assigned number shall remain unchanged regardless of future name changes.

(b) If the identification numbers cannot be tracked centrally by the Regents of the University of California, then the regents, and not the chancellors, shall assign the identification numbers.