(A) A person licensed as an athletic trainer pursuant to this chapter shall engage in the activities described in section 4755.621 or 4755.622 only if the person acts upon the referral of one or more of the following:

(1) A physician;

(2) A dentist licensed under Chapter 4715 of the Revised Code;

(3) A physical therapist licensed under this chapter;

(4) A chiropractor licensed under Chapter 4734 of the Revised Code;

(5) Subject to division (B) of this section, an athletic trainer licensed under this chapter;

(6) A physician assistant licensed under Chapter 4730 of the Revised Code;

(7) A certified nurse practitioner licensed under Chapter 4723 of the Revised Code.

(B) A person licensed as an athletic trainer pursuant to this chapter may practice upon the referral of an athletic trainer described in division (A) of this section only if athletic training has already been recommended and referred by a health care provider described in division (A) of this section who is not an athletic trainer.