W. Va. Code § 16-1A-5
The Secretary and the Insurance Commissioner shall, with the advice of the advisory committee, take such steps as are necessary to select and contract with a credentialing verification organization that will, beginning no later than July 1, 2015, be the sole source for primary source verification for all credentialing entities. The credentialing verification organization selected shall be responsible for the receipt of all uniform applications, the primary source verification of the information provided on such applications, and the updating and maintenance of all information generated by such activities. The dates on which the use of this statewide credentialing verification organization is mandatory with respect to the credentialing of the different classes of health care practitioners shall be determined by emergency and legislative rules promulgated pursuant to the authority in section ten of this article.
W. Va. Code § 16-1A-5