C.R.S. § 12-250-111

(1) A person shall not hold himself or herself out as a naturopathic doctor or use any of the titles or initials referred to in subsection (2) of this section unless the person is registered as a naturopathic doctor pursuant to this article 250. (2) A naturopathic doctor may use the title “naturopathic doctor”, or “doctor of naturopathy”, or the initials “N.D.” (3) A naturopathic doctor shall qualify any specialty services provided to the public with “naturopathic” or “naturopath”. (4) A naturopathic doctor shall not use: (a) The term “physician” in describing the naturopathic doctor’s registered naturopathic medicine practice in this state; (b) The abbreviations “NMD” or “N.M.D.”; (c) The term “naturopathic medical doctor”. (5) Nothing in this section prevents a naturopathic doctor from disclosing membership in national organizations or associations of naturopathic physicians unless the disclosure is false, misleading, or deceptive. (6) Nothing in this section prevents a person from using the term “doctor” or the title “Dr.” if he or she satisfies the requirements of section 6-1-707 (1)(a).