334.910.  Complaints received by the board, investigation, subpoenas, petitions, filing complaint with administrative hearing commission. — Any complaint received by the board concerning a person who is the holder of a license or permit issued pursuant to sections 334.800 to 334.930 or any complaint regarding any professional practice regulated by sections 334.800 to 334.930 shall be recorded as received and the date received.  The board:

  (1)  Shall investigate all complaints concerning alleged violations of the provisions of sections 334.800 to 334.930 or if there are grounds for the suspension, revocation or refusal to issue any license or permit.  The board may employ investigators who shall investigate complaints and make inspections and any inquiries as, in the judgment of the board, are appropriate to enforce the provisions of sections 334.800 to 334.930;

  (2)  May issue subpoenas and subpoena duces tecum in order to cause any licensee, permit holder or any other person to produce records or to appear as a witness pursuant to any investigation or proceeding conducted pursuant to the provisions of sections 334.800 to 334.930;

  (3)  May, in lieu of or in addition to any remedy provided in this section, file a petition in the name of the state asking a court to issue a restraining order, an injunction or a writ of mandamus against any person who is, or has been, violating any of the provisions of sections 334.800 to 334.930 or any lawful rule, order or subpoena of the department or the board;

  (4)  May, if the evidence supports such action, cause a complaint to be filed with the administrative hearing commission as provided in chapter 621 against any holder of any license or permit issued pursuant to sections 334.800 to 334.930.