Okla. Stat. tit. 36, § 36-2605: Service contracts

Any such corporation may enter into contracts for the rendering

or providing of hospital and/or medical service or indemnity to any

of its members with any individuals licensed in any branch of the

healing arts and/or licensed hospitals maintained or operated by

individuals, partnerships, associations or corporations and

hospitals maintained or operated by the state or its subdivisions.

Any such corporation may contract with any domestic or foreign

corporation or associations for the purpose of providing or

rendering hospital or medical service or indemnity.