Okla. Stat. tit. 36 § 6045
Notwithstanding any provision of any individual or group policy, contract, plan or agreement of accident and/or health insurance or any provisions of a policy, contract, plan or agreement for hospital or medical service or indemnity, whenever such policy, contract, plan or agreement provides for reimbursement for any mental or behavioral health or alcohol and drug treatment service which is within the lawful scope of practice of a duly licensed physician, physician assistant, licensed clinical social worker, licensed professional counselor, licensed marriage and family therapist, licensed alcohol and drug counselor, licensed behavioral practitioner, licensed psychologist, or advance practice registered nurse, the person entitled to benefits, or the person performing services, under such policy, contract, plan or agreement shall be entitled to reimbursement on an equitable basis for such service at a rate commensurate with the requirements for their licensure.
Okla. Stat. tit. 36, § 6045