R.I. Gen. Laws § 5-30-3
No person may practice chiropractic medicine or any of its branches without a certificate issued under the authority of this chapter, which certificate has not been suspended or revoked as provided in this chapter, and without registering annually, as provided by § 5-30-12. No one may represent himself or herself to be a chiropractic physician, or use the title "Doctor of Chiropractic," "D.C.," "Ph.C.," "M.C.," or any word or title to induce the belief that he or she is engaged in the practice of chiropractic medicine, without having a certificate and registering as stated in this section. No person who has a certificate to practice chiropractic medicine issued under the provisions of this chapter shall practice physiotherapy or any of its branches without a certificate authorizing him or her to do so issued under the authority of this chapter. This section shall not be construed to prevent the employment of corrective orthopedics and dietetics by other qualified persons.
R.I. Gen. Laws § 5-30-3