telephone numbers of each medical group, clinic, or facility contracted to participate in any of the networks of the group health plan or health insurance coverage involved. . (c) IRC Subchapter B of chapter 100 of the Internal Revenue Code of 1986, as amended by section 2, is further amended by adding at the end the following: 9817. Protecting patients and improving the accuracy of provider directory information (a) Network status of providers (1) In general Beginning on the date that is one year after the date of enactment of this section, a group health plan shall— (A) establish business processes to ensure that all participants or beneficiaries in such plan receive proof of a health care provider’s network status, based on what a plan or issuer knows or should know— (i) upon a telephone inquiry by a participant or beneficiary— (I) through a written electronic communication from the plan to the participant or beneficiary, as soon as practicable and not later than 1 business day after such inquiry is made by such participant or beneficiary for such information