Mich. Comp. Laws § 338.91

Sec. 1. For the purpose of appointment to governmental positions or serving on state, county, city, township or other public agencies, departments or subsidiaries thereof wherever the laws of the state require the services of or the qualifications of a licensed medical doctor, either a licensed medical physician or a licensed osteopathic physician shall be entitled to equal consideration for such services in all cases except serving on the licensing boards thereof.