(a) Except as provided by Section 166.032(b-1), a written directive executed under Section 166.033 or 166.035 is effective without regard to whether the document has been notarized.
(b) A physician, health care facility, or health care professional may not require that:
(1) a directive be notarized; or
(2) a person use a form provided by the physician, health care facility, or health care professional.