Concerning health care provider credentialing by health carriers. Prohibits a health carrier from requiring a health care provider to submit credentialing information in a format other than through the database selected under RCW 48.165.035. Decreases the amount of time in which a health carrier must make a determination approving or denying a credentialing application from a health care provider. Requires a health carrier that credentials a health care provider in its network to reimburse the health care provider for covered health care services provided to the carrier’s enrollees during the credentialing process.