Sec. 2. As used in this chapter, "licensed physician" means:
(1) an individual who holds an unlimited license to practice medicine in Indiana under IC 25-22.5;
(2) a physician with a restricted license; or
(3) any:
(A) student in training in a medical school approved by the medical licensing board; or
(B) intern or resident who performs duties in a hospital under the supervision of the hospital's staff or in a program approved by the medical school.