Cal. Welfare and Institutions Code § 6508

Each psychologist and physician shall receive for each attendance mentioned in Section 6507 the sum of five dollars ($5) for each person examined, together with his necessary actual expenses occasioned thereby, and other witnesses shall receive for such attendance such fees and expenses as the court in its discretion allows, if any, not exceeding the fees and expenses allowed by law in other cases in the superior court. Any fees or traveling expenses payable to a psychologist, physician, or witness as provided in this section and all expenses connected with the execution of any process under the provisions of this article, which are not paid by the parent, guardian, conservator, or person charged with the support of the person with the supposed developmental disability, shall be paid by the county treasurer of the county in which the person resides, upon the presentation to the treasurer of a certificate of the judge that the claimant is entitled thereto.