California Code, Business and Professions Code - BPC § 2435.1

(a) In addition to the fees charged for the initial issuance or biennial renewal of a physician and surgeon's certificate pursuant to Section 2435, and at the time those fees are charged, the board shall charge each applicant or renewing licensee an additional twenty-five dollar ($25) fee for the purposes of this section.

(b) Payment of this twenty-five dollar ($25) fee shall be voluntary, paid at the time of application for initial licensure or biennial renewal, and due and payable along with the fee for the initial certificate or biennial renewal.

(c) The board shall transfer all funds collected pursuant to this section, on a monthly basis, to the Department of Health Care Access and Information to augment the local assistance line item of the annual Budget Act in support of the Song-Brown Family Physician Training Act (Article 1 (commencing with Section 128200) of Chapter 4 of Part 3 of Division 107 of the Health and Safety Code).