Mich. Comp. Laws § 500.3509

Sec. 3509. (1) An application to the director for a certificate of authority must be on a form prescribed and provided by the director. (2) A certificate of authority issued to a health maintenance organization under this act is limited to the service area described in the application on which the certificate of authority was issued. Approved parts of a health maintenance organization's service area are not required to be contiguous. (3) A health maintenance organization seeking to change the approved service area shall submit an application to change service area to the director and shall not change the service area until approval is received. The director shall specify the information required to be in the application under this subsection.