Mich. Comp. Laws § 750.428

Sec. 428. Any physician or surgeon who shall divide fees with or shall promise to pay a part of his or her fee to or pay a commission to any other physician or surgeon or person who calls him or her in consultation or sends patients to him or her for treatment or operation, and any physician or surgeon who shall receive any money prohibited by this section, is guilty of a misdemeanor punishable by imprisonment for not more than 6 months or a fine of not more than $750.00. If a physician or surgeon is convicted of violating this section, the board of registration in medicine, upon a first conviction, may and upon a subsequent conviction shall, revoke the license of the person so convicted.