Oregon Revised Statutes Insurance § 743A.036

(1) Whenever any policy of health insurance provides for reimbursement for a primary care or mental health service provided by a licensed physician, the insured under the policy is entitled to reimbursement for such service if provided by a licensed physician assistant or a certified nurse practitioner if the service is within the lawful scope of practice of the physician assistant or nurse practitioner.

(3) This section does not apply to group practice health maintenance organizations that are federally qualified pursuant to Title XIII of the Health Maintenance Organization Act or other insurers that employ physicians, licensed physician assistants or certified nurse practitioners to provide primary care or mental health services and do not compensate such practitioners on a fee-for-service basis.

(4) An insurer may not reduce the reimbursement paid to a licensed physician in order to comply with this section.