Oregon Revised Statutes Public Health and Safety § 445.120

(1) The claim of a claimant other than a hospital shall be in form and substance like that provided in ORS 445.110 in so far as applicable and be accompanied by the same supporting documents. However, only one set of supporting documents need be filed in respect of any one indigent patient in regard to any one motor vehicle injury.

(2) An account for the services of an orthodontist for orthodontia performed by the orthodontist on the order of the doctor in charge of the case or an account for care supplied by a nurse, pharmacy, ambulance operator, supplier of prosthetic appliances and services or services of a licensed physical therapist may be, with the consent of the doctor, assigned to, and included as a part in and of the claim of, a hospital or doctor.