Ohio Revised Code Title XLVII. Occupations Professions § 4731.43

(A) No person shall announce or advertise that person as an osteopathic physician and surgeon, or shall practice as such, without a license from the state medical board or without complying with all the provisions of law relating to such practice, or shall practice after such license has been revoked, or if suspended, during the time of such suspension.

(B) Division (A) of this section does not apply to a person who holds in good standing a valid license to practice as an osteopathic physician and surgeon issued by another state and is practicing as a volunteer without remuneration during a charitable event that lasts not more than seven days.

When a person meets the conditions of this division, the person shall be deemed authorized by the state medical board, during the course of the charitable event, to practice osteopathic medicine and surgery and shall be subject to the provisions of this chapter authorizing the board to take disciplinary action against a physician. Not less than seven calendar days before the first day of the charitable event, the person or the event's organizer shall notify the board of the person's intent to practice osteopathic medicine and surgery at the event. During the course of the charitable event, the person's scope of practice is limited to the procedures that a physician authorized under this chapter to practice osteopathic medicine and surgery is authorized to perform unless the person's scope of practice in the other state is more restrictive than in this state. If the latter is the case, the person's scope of practice is limited to the procedures that an osteopathic physician in the other state may perform.

(C) A license certified by the secretary, under the official seal of the board to the effect that it appears from the records of the board that no license to practice osteopathic medicine and surgery has been issued to any person specified therein, or that a license, if issued, has been revoked or suspended shall be received as prima-facie evidence of the record in any court or before any officer of the state.