On and after July 1, 1993, the Oklahoma Health Care Authority shall be the state entity designated by law to assume the responsibilities for the preparation and development for converting the present delivery of the Oklahoma Medicaid Program to a managed care system. The system shall emphasize:
1. Managed care principles, including a capitated, prepaid system with either full or partial capitation, provided that highest priority shall be given to development of prepaid capitated health plans;
2. Use of primary care physicians to establish the appropriate type of medical care a Medicaid recipient should receive; and
3. Preventative care.