As a condition of enrollment, an individual must attest to SSA in either a verbal attestation, signed paper form provided by SSA, by electronic submission, or fax, using procedures determined by SSA, that—

(a) The individual is not enrolled and does not expect to enroll in other coverage described in § 407.55(b); and

(b) If the individual does enroll in other coverage described in § 407.55(b), the individual will notify SSA within 60 days of enrollment in such other coverage.