If a hospital receives a subpoena duces tecum from an attorney

If a hospital receives a subpoena duces tecum from an attorney demanding either the originals or copies of all health records on a person who was allegedly a patient of the hospital, but, the subpoena lacks sufficient information for you to determine whether the person is or was a patient of the hospital and the subpoena was also not accompanied by a valid authorization to release information for the patient, as required by the state of Ohio, What regulations would apply to this request?