Notwithstanding any other provision of law to the contrary, for contracts relating to the plan year beginning January 1, 2003, and for each plan year thereafter, the Oklahoma Employees Insurance and Benefits Board shall:
a. develop geographic service areas and list the zip codes contained in such service areas. Each participating health maintenance organization shall not be required to offer enrollment in every service area as a condition to participation in the State Account, b. not require participating health maintenance organizations to offer a Medicare supplement plan; provided, however, any participating health maintenance organization that offers a Medicare supplement plan to other entities within this state shall be required to offer a Medicare supplement plan, c. require participating health maintenance organizations to meet the standardized benefit plan as required by the Oklahoma Employees Insurance and Benefits Board; provided, however, participating health maintenance organizations may offer enhancements in an effort to make their plans more attractive and competitive, and d. ensure that all premiums collected are paid to participating health maintenance organizations within sixty (60) calendar days of receipt.