No agency, institution, or physician providing a service for which payment or reimbursement is required to be made under a contract governed by this Article or Article 66 of this Chapter shall be denied the payment or reimbursement on account of the fact that the service was rendered through a physician assistant acting under authority of rules adopted by the North Carolina Medical Board pursuant to N.C. Gen. Stat. § 90-18.1 (1999-210, s. 4.)