Sec. 3. As used in this chapter, "practitioner" means any of the following:
(1) A licensed physician.
(2) A dentist licensed to practice dentistry in Indiana.
(3) A podiatrist licensed to practice podiatry in Indiana.
(4) A veterinarian licensed to practice veterinary medicine in Indiana.
(5) An optometrist who is:
(A) licensed to practice optometry in Indiana; and
(B) certified under IC 25-24-3.
(6) An advanced practice registered nurse licensed and granted the authority to prescribe legend drugs under IC 25-23.