Regulation of physical therapists. Establishes the Indiana board of physical therapy (board). (Current law regulates physical therapy under the medical licensing board, with certain functions delegated to the Indiana physical therapy committee.) Creates a new definition of “physical therapy” and adds or amends other definitions. Amends certain prohibited acts to include business entities. Adds physician assistants and nurse practitioners to the list of persons who may issue an order to a physical therapist. Allows a physical therapist to treat a patient for 42 days without a referral from a provider.