424.506—National Provider Identifier (NPI) on all enrollment applications and claims.
(a)
Definition. Eligible professional means any of the professionals specified in section 1848(k)(3)(B) of the Act.
(b) Enrollment requirements.
(1)
A provider or a supplier who is eligible for an NPI must report its National Provider Identifier (NPI) on its Medicare enrollment application.
(2)
If a provider or a supplier who is eligible for an NPI enrolled in the Medicare program prior to obtaining an NPI and the provider's or the supplier's NPI is not in the provider's or the supplier's Medicare enrollment record, the provider or the supplier must submit a Medicare enrollment application that contains the NPI.
(3)
A physician or an eligible professional who has validly opted out of the Medicare program does not need to submit an enrollment application.
(c) Claims reporting requirements.
(1)
A provider or a supplier who is enrolled in Medicare and who submits a paper or an electronic claim to Medicare include its National Provider Identifier (NPI) and the NPI(s) of any other provider(s) or suppliers(s) who is required to be identified.
(i)
Must include the legal name of any provider or supplier who is required to be identified in that claim; and
(ii)
May, if known to the beneficiary, include the National Provider Identifier (NPI) of any provider or supplier who is required to be identified in that claim.
(3)
A Medicare contractor will reject a claim from a provider or a supplier if the required NPI(s) is not reported.
[75 FR 24448, May 5, 2010]