California Code, Financial Code - FIN § 462

Any person that provides services to any licensee, at the request of the commissioner, shall submit to an examination by the commissioner.  Should the commissioner deem it necessary or desirable that an examination be made of a person, the examination shall be made at the expense of the person examined.  If the person refuses to permit an examination to be made, the commissioner may order every licensee receiving services from that person to discontinue receiving those services or otherwise conducting business with that person, and the licensees shall comply with that order.