(a) A patient receiving mental health services under this subtitle has the right to:
(1) appropriate treatment for the patient's mental illness in the least restrictive appropriate setting available;
(2) not receive unnecessary or excessive medication;
(3) refuse to participate in a research program;
(4) an individualized treatment plan and to participate in developing the plan; and
(5) a humane treatment environment that provides reasonable protection from harm and appropriate privacy for personal needs.
(b) Participation in a research program does not affect a right provided by this chapter.
(c) A right provided by this section may not be waived by the patient, the patient's attorney or guardian, or any other person acting on behalf of the patient.