Cal. Health & Saf. Code § 1265.2
A "crime," within the meaning of this chapter, means a violation of a law or regulation which is substantially related to the qualifications or duties of the applicant or licensee or which is substantially related to the functions of the business for which the license was, or is to be, issued.
A "conviction," within the meaning of this chapter, means a plea or verdict of guilty or a conviction following a plea of nolo contendere. Any action which the state department is permitted to take following the establishment of a conviction may be taken when the time for appeal has elapsed, or the judgment of conviction has been affirmed on appeal or when an order granting probation is made suspending the imposition of sentence, notwithstanding a subsequent order pursuant to the provisions of Section 1203.4 of the Penal Code permitting such person to withdraw his plea of guilty and to enter a plea of not guilty, or setting aside the verdict of guilty, or dismissing the accusation, information, or indictment.
Evidence of conviction of a misdemeanor following a plea of nolo contendere pursuant to the provisions of Section 1290 shall not be admissible in any hearing conducted under Section 1269 or 1295.
No application for licensure shall be denied nor shall a license be suspended or revoked solely on the basis of the conviction of a crime if the director determines that the person has been rehabilitated in accordance with standards for rehabilitation developed by the director. The director shall take into account all competent evidence of rehabilitation furnished by the applicant or licensee.
Ca. Health and Saf. Code § 1265.2