How will the NPI affect other numbers Ive used in the past?
The NPI will replace other identifying numbers currently used in electronic transactions, such as the Medicaid, Blue Cross and Blue Shield, UPIN, CHAMPUS, and certain other legacy numbers. The NPI will not replace the Social Security Number, DEA number, Taxpayer ID number, taxonomy number, or state license number, since these are used for purposes other than general identification. Taxpayer ID numbers or Social Security Numbers must still be provided for 1099 purposes, but the NPI will replace all other identification numbers on the claim.