Ohio Rev. Code § 4765.36: Authorized services in hospital.

In a hospital, an emergency medical technician-basic, emergency medical technician-intermediate, or emergency medical technician-paramedic may perform emergency medical services if the services are performed in accordance with both of the following conditions:

(A) Only in the hospital's emergency department or while moving a patient between the emergency department and another part of the hospital;

(B) Only under the direction and supervision of one of the following:

(1) A physician;

(2) A physician assistant designated by a physician;

(3) A registered nurse designated by a physician.