Health insurance; in-network guarantees. Prohibits a health carrier that offers a managed care plan from entering into, extending, or renewing a provider contract with a facility unless such provider contract contains provisions requiring that each health care provider (i) that provides emergency or ancillary services at the facility is an in-network provider or has agreed to have his reimbursement from the health carrier included as part of the health carrier’s payment to the facility and to not separately bill the health carrier or the covered person for emergency or ancillary services provided at such facility and (ii) that any laboratory or diagnostic services provided at the facility are in-network or, if such services are referred by a provider at the facility, the referral is to an in-network provider.