1.  Nonpreferred providers.  A carrier incorporating a preferred provider arrangement into a health plan shall provide for payment of covered health care services rendered by providers that are not preferred providers.  

2.  Benefit level.  The benefit level differential between services rendered by preferred providers and nonpreferred providers may not exceed 20% of the allowable charge for the service rendered, except that the superintendent may waive this requirement for a given benefit plan. Compliance with this requirement for a given benefit plan may be demonstrated on an aggregate basis. This demonstration of compliance must be based on a reasonably anticipated mix of claims certified by a qualified actuary who is a member of the American Academy of Actuaries or a successor organization. As used in this subsection, "allowable charge" means the amount that would be payable for services under the preferred provider arrangement including deductible and coinsurance amounts.