225 ILCS 63/25
Every person to whom a valid existing license as a naprapath has been issued under this Act shall be designated professionally a "naprapath", and not otherwise, and any licensed naprapath may, in connection with the practice of his profession, use the title or designation of "naprapath", and, if entitled by degree from a college or university recognized by the Department , may use the title of "Doctor of Naprapathy" or the abbreviation "D.N.". When the name of the licensed naprapath is used professionally in oral, written, or printed announcements, professional cards, or publications for the information of the public and is preceded by the title "Doctor" or the abbreviation "Dr.", the explanatory designation of "naprapath", "naprapathy", "Doctor of Naprapathy", or the designation "D.N." shall be added immediately following title and name. When the announcement, professional cards, or publication is in writing or in print, the explanatory addition shall be in writing, type, or print not less than 1/2 the size of that used in the name and title. No person other than the holder of a valid existing license under this Act shall use the title and designation of "Doctor of Naprapathy", "D.N.", or "naprapath", either directly or indirectly, in connection with his or her profession or business.
A naprapath licensed under this Act shall not hold himself or herself out as a Doctor of Chiropractic unless he or she is licensed as a Doctor of Chiropractic under the Medical Practice Act of 1987 or any successor Act.
225 ILCS 63/25