Ohio Rev. Code Ann. § 4730.21
(A) The supervising physician of a physician assistant exercises supervision, control, and direction of the physician assistant. A physician assistant may practice in any setting within which the supervising physician has supervision, control, and direction of the physician assistant. In supervising a physician assistant, all of the following apply:
(1) The supervising physician shall be continuously available for direct communication with the physician assistant by either of the following means:
(F)
(2) In establishing the quality assurance system, the supervising physician shall describe a process to be used for all of the following: