Cal. Bus. & Prof. Code § 2529.8.1
(a) A person shall not hold themselves out to be an athletic trainer, use the title “athletic trainer,” “certified athletic trainer,” “licensed athletic trainer,” “registered athletic trainer,” or any other term such as “AT,” “ATC,” “LAT,” or “CAT” to imply or suggest that the person is an athletic trainer, unless they meet the following requirements:
(1) Have done either of the following:
(c) A person shall not hold themselves out to be an athletic trainer or use any of the titles listed under subdivisions (a) and (b) if either of the following is true: