(a) A patient has the right to bring grievances about the patient's treatment, care, or rights to an impartial body within an evaluation facility or designated treatment facility.
(b) An evaluation facility and a designated treatment facility shall have a formal grievance procedure for patient grievances brought under (a) of this section. The facility shall inform each patient of the existence and contents of the grievance procedure.
(c) An evaluation facility and a designated treatment facility shall have a designated staff member who is trained in mental health consumer advocacy who will serve as an advocate, upon a patient's request, to assist the patient in bringing grievances or pursuing other redress for complaints concerning care, treatment, and rights.