Illinois Statutes Chapter 755. Estates § 45/4-5.1. Limitations on who may witness health care agencies

(1) the attending physician, advanced practice registered nurse, physician assistant, dentist, podiatric physician, optometrist, or psychologist of the principal, or a relative of the physician, advanced practice registered nurse, physician assistant, dentist, podiatric physician, optometrist, or psychologist;

(2) an owner, operator, or relative of an owner or operator of a health care facility in which the principal is a patient or resident;

(3) a parent, sibling, or descendant, or the spouse of a parent, sibling, or descendant, of either the principal or any agent or successor agent, regardless of whether the relationship is by blood, marriage, or adoption;

(4) an agent or successor agent for health care.