42 U.S.C. § 300gg: Provision of information upon request and for scheduled appointments

inquire if such individual is enrolled in a group health plan, group or individual health insurance coverage offered by a health insurance issuer, or a Federal health care program (and if is so enrolled in such plan or coverage, seeking to have a claim for such item or service submitted to such plan or coverage); and in the case the individual is enrolled in such a plan or such coverage (and is seeking to have a claim for such item or service submitted to such plan or coverage), such plan or issuer of such coverage; and in the case the individual is not described in subparagraph (A) and not enrolled in a Federal health care program, the individual.