W. Va. Code § 5-16-16: Preferred provider plan.

The director shall establish a preferred provider system for the delivery of health care to plan participants by all health care providers, which may include, but not be limited to, medical doctors, chiropractors, physicians, osteopathic physicians, surgeons, hospitals, clinics, nursing homes, pharmacies, and pharmaceutical companies.

The director shall establish the terms of the preferred provider system and the incentives therefor. The terms and incentives may include multiyear renewal options as are not prohibited by the Constitution of this state and capitated primary care arrangements which are not subject to the provisions of §33-25A-1 et seq. of this code.