Mich. Comp. Laws § 773.4

Sec. 4. The magistrate may issue subpoenas for witnesses returnable immediately or at the time and place prescribed in the subpoena. The attendance of the person served with the subpoena may be enforced in the same manner and shall be subject to the same penalty as if the person had been served with a subpoena in behalf of the people of this state, to attend a trial before that magistrate. A magistrate holding an inquest may require by subpoena the attendance of a competent physician or surgeon for the purpose of making a postmortem examination and of testifying as to the result of the examination. The magistrate may also employ a chemist if there is reasonable ground of suspicion that death has been produced by poison. The amount of compensation for the attendance and services of a physician, surgeon, or chemist shall be audited and allowed by the county board of commissioners of the proper county, or by the board of county auditors in counties having a board of county auditors.