Michigan Compiled Laws, Chapter 330. Mental Health Code § 330.1104

Sec. 104. (1) The head of the department is the director of mental health as provided in section 401 of the executive organization act of 1965, 1965 PA 380, MCL 16.501.

(2) All executive authority of and within the department is vested in the director, who may delegate that authority as he or she considers necessary or appropriate. Any authority that has by law been vested in any entity owned or operated by the department, or any employee of the department is exercisable by the director at his or her option. The director shall delegate authority for clinical decisions to appropriately trained clinical professionals. This subsection applies to each chapter of this act.

(3) The director shall appoint a medical director of mental health services who is an appropriately credentialed psychiatrist. The medical director shall do all of the following:

(4) Clinical psychiatric decisions regarding the admission, treatment, and discharge of psychiatric patients in state mental hospitals shall be made by qualified state hospital physicians or appropriately credentialed psychiatrists granted state hospital staff privileges under section 245.  1