Mich. Comp. Laws § 500.3535
Solicitation of enrollees or advertising of the services, charges, or other nonprofessional aspects of the health maintenance organization's operation under this section is not in violation of laws relating to solicitation or advertising by health professionals. A health maintenance organization shall not, in its solicitation or advertising allowed under this section, include advertising that makes a qualitative judgment as to a health professional who provides services for the health maintenance organization. A health maintenance organization shall not, in its solicitation or advertising allowed under this section, offer a material benefit or other thing of value as an inducement to prospective subscribers other than the services of the health maintenance organization.
MCL 500.3535