California Code, Business and Professions Code - BPC § 2455.1

(a) In addition to the fees charged pursuant to Section 2455, and at the time those fees are charged, the board shall charge each applicant for an original or reciprocity certificate or for a biennial license an additional twenty-five-dollar ($25) fee for the purposes of this section. This twenty-five-dollar ($25) fee shall be due and payable along with the fee for the original or reciprocity certificate or the biennial license.

(b) On or before July 1, 2015, the board shall develop a mechanism for an osteopathic physician and surgeon to pay a voluntary contribution, at the time of initial application for licensure or biennial renewal, for the purposes of this section.

(c) The board shall transfer all funds collected pursuant to this section, on a monthly basis, to the Medically Underserved Account for Physicians created by Section 128555 of the Health and Safety Code for the purposes of the Steven M. Thompson Physician Corps Loan Repayment Program. Notwithstanding Section 128555 of the Health and Safety Code, these funds shall not be used to provide funding for the Physician Volunteer Program.