Nothing in this chapter shall be construed to prohibit or restrict:

(1) The practice of a profession by individuals who are licensed, certified, or registered under other laws of this state who are performing services within their authorized scope of practice;

(2) The practice of naturopathic medicine by an individual employed by the government of the United States while the individual is engaged in the performance of duties prescribed for him or her by the laws and regulations of the United States;

(3) The practice of naturopathic medicine by students enrolled in a school approved by the secretary. The performance of services shall be pursuant to a course of instruction or assignments from an instructor and under the supervision of the instructor. The instructor shall be a naturopath licensed pursuant to this chapter; or

(4) The practice of oriental medicine or oriental herbology, or the rendering of other dietary or nutritional advice.