California Code, Business and Professions Code - BPC § 4999.200

(a) Is certified by a national entity, such as the Behavior Analyst Certification Board, with a certification that is accredited by the National Commission for Certifying Agencies who designs, supervises, or provides treatment for pervasive developmental disorder or autism, provided the services are within the experience and competence of the individual who is nationally certified.

(b) Is licensed as a physician and surgeon, physical therapist, occupational therapist, psychologist, marriage and family therapist, educational psychologist, clinical social worker, professional clinical counselor, speech-language pathologist, or audiologist, pursuant to Division 2 (commencing with Section 500), and who designs, supervises, or provides treatment for pervasive developmental disorder or autism, provided the services are within the experience and competence of the licensee.