Mich. Comp. Laws § 450.1283

Sec. 283. (1) Except as provided in this section, 1 or more licensed persons may form a professional corporation under this chapter. (2) Except as otherwise permitted under section 284(5) or section 288(2), each shareholder of a professional corporation must be 1 of the following: (a) A licensed person in 1 or more of the professional services provided by the professional corporation. (b) An entity that is directly or beneficially owned only by persons that are licensed persons in 1 or more of the professional services provided by the professional corporation. (3) Except as provided in this section or otherwise prohibited, the articles of incorporation of a professional corporation shall state that the professional corporation is formed to provide 1 or more professional services and shall state the specific professional service or services the professional corporation is formed to provide. (4) The name of a professional corporation shall contain the words "professional corporation" or the abbreviation "P.C." with or without periods or other punctuation.