Medicare Fee For Service (FFS) National Provider Identifier (NPI) Crosswalk Status Review
Guidance for the CR that directs contractors to take advantage of the NPI crosswalk in resolving issues where either the provider is not on the crosswalk or the provider's NPI and/or legacy matches to more than one legacy and/or NPI.
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: June 08, 2007
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