Ohio Rev. Code § 3702.531
The director of health shall evaluate and may investigate evidence that appears to demonstrate that any person has violated section 3702.53 of the Revised Code. If the director elects to conduct an investigation, the director shall mail to the alleged violator by certified mail, return receipt requested, a notice that an investigation is underway.
When conducting an investigation under this section, the director may request any relevant information pertaining to the alleged violation, including the total operating cost of the activity in question during the period of the alleged violation and the total capital cost associated with implementation of the activity. A person shall provide information requested by the director not later than forty-five days after receiving the director's request. The director also may issue and enforce, in the manner provided in Chapter 119. of the Revised Code, subpoenas duces tecum to compel the production of documents relevant to the alleged violation. The subpoenas may be served in any manner authorized by the rules of civil procedure.
The director or the director's designee may conduct a site visit to investigate an alleged violation of section 3702.53 of the Revised Code.
Each investigation under this section shall be conducted in a manner that protects patient confidentiality. Names or other identifying information about any patient shall not be made public without the written consent of the patient or the patient's guardian, or, if the patient is a minor, the patient's parent or guardian.
R.C. § 3702.531