As used in this act:
1. "Co-payment" means a type of cost sharing whereby insured or covered persons pay a specified predetermined amount per unit of service with their insurer paying the remainder of the charge. The co-payment is incurred at the time the service is rendered. The co- payment may be a fixed or variable amount;
2. "Contract provider" means a pharmacy or pharmacist granted the right to provide prescription drugs and pharmacy services according to the terms of the insurer;
3. "Insurer" means any individual, plan, policy or contract that provides health care coverage benefits for pharmacy services including, but not limited to, prescription drugs;
4. "Pharmacist" means any person licensed by the Oklahoma State Board of Pharmacy to practice pharmacy; and 5. "Pharmacy" means a pharmacy licensed by the Oklahoma State Board of Pharmacy.