This chapter shall not apply to:
A. Hospitals, nursing homes, and other state-licensed health care facilities or their employees while working in the employing facility.
B. Persons holding a valid license to practice the healing arts under the laws of the state, or persons working on the business premises of, and under the direct supervision of, a person holding a valid license to practice the healing arts under the laws of the state.
C. Barbers or cosmetologists lawfully carrying out their particular profession or business and holding a valid, unrevoked license or certificate of registration issued by the state.
D. Persons employed by an athletic facility which offers massage therapy as an incidental or accessory service and who provide massage therapy services only at the athletic facility.