Provides that if an insurer contracts with a third party for coverage of services related to the treatment of a mental illness or substance abuse, the insurer and third party shall deem a provider providing mental illness or substance abuse services as: (1) an in network provider for purposes of calculating cost sharing for a covered individual if the provider is in network for medical or surgical services under the health plan; and (2) credentialed for mental illness or substance abuse services if the provider is credentialed for medical or surgical services under the health plan.