(1) The board may refuse to issue or renew a license or permit, or may suspend or revoke a license or permit, impose probationary conditions upon, impose an administrative fine, issue a written reprimand or admonishment, or take any combination of these actions regarding proof of any applicant's, permittee's, or licensee's:
(a) Gross malpractice or incompetence;
(b) Mental or physical health that would endanger public health or safety;
(c) Failure to comply with regulations or rules of the board;
(d) False or deceptive advertising;
(e) Practicing in an unlicensed shop or in a shop knowing that the shop is not complying with this chapter or regulations of the board promulgated pursuant to this chapter;
(f) Unprofessional conduct;
(g) Teaching in an unlicensed school or in a school knowing that the school is not complying with this chapter or administrative regulations of the board promulgated pursuant to this chapter;
(h) Practicing as an independent contract owner in any manner that violates any provision of this chapter or the administrative regulations promulgated under this chapter; or (i) Violation of a provision of this chapter or an administrative regulation promulgated by the board pursuant to this chapter.
(2) The board may require retesting of any licensee upon proper showing of gross malpractice or incompetence on the part of each licensee.