NPI and NPPES

1. NPI overview

   10-digit NPI standard and who must obtain one.

2. Check digit algorithm

   Luhn algorithm with 80840 prefix.

3. NPPES enrollment

   Applying for and updating an NPI.

4. NPI Registry API

   Registry API parameters and response fields.

5. NPPES data dissemination

   Monthly full and weekly incremental NPI files.

6. Regulation 45 CFR 162 subpart D

   Requirements for covered entities to use NPIs on transactions.

7. Entity types

   Type 1 individuals vs Type 2 organizations and subparts.

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