Ohio Rev. Code Ann. § 4766.13

The state board of emergency medical, fire, and transportation services, by endorsement, may license and issue vehicle permits to an emergency medical service organization or a nonemergency medical service organization that is regulated by another state. To qualify for a license and vehicle permits by endorsement, an organization must submit evidence satisfactory to the board that it has met standards in another state that are equal to or more stringent than the standards established by this chapter and the rules adopted under it.