Tenn. Code Ann. § 63-3-108

This chapter shall not apply to the commissioned physicians and surgeons of the United States army, navy, air force or marine hospital service in the actual performance of their official duties, nor to physicians and surgeons or to osteopathic physicians and surgeons regularly licensed under the laws of this state, nor to visiting podiatrists called into consultation in this state from another state where they are duly qualified under the laws of that state to practice podiatry.