Mich. Comp. Laws § 500.2213a

Sec. 2213a. (1) The director shall calculate actual and necessary expenses incurred by the director under section 2213 by June 30 of each year for the immediately preceding fiscal year. Except as otherwise provided in subsection (2), the director shall divide these expenses among all insurers that issue a policy or certificate under chapter 34 or 35 in this state on a pro rata basis according to the direct written premiums of each insurer as reported in the insurer's annual statement for the immediately preceding calendar year. An insurer shall pay the assessment within 30 days after receipt of the assessment. The assessment is in addition to the regulatory fee provided for in section 224. (2) This section does not apply to a policy, certificate, care, coverage, or insurance listed in section 5(2) of the patient's right to independent review act, 2000 PA 251, MCL 550.1905, as not being subject to the patient's right to independent review act, 2000 PA 251, MCL 550.1901 to 550.1929. (3) As used in this section, "insurer" includes a nonprofit dental care corporation operating under 1963 PA 125, MCL 550.351 to 550.373.