National Provider Identifier Validation Tool

The National Provider Identifier (NPI) is a unqiue, 10-position numeric identifier, issued by the Centers for Medicare and Medicaid Services (CMS) for covered health care providers.

NPI numbers can be pre-validated using the ISO standard Luhn algorithm, which has been implemented in the tool below.

NPI Validation Tool

Need a NPI pre-check solution for your system? Learn more about the ISO standard Luhn algorithm and how to calculate the NPI Check Digit.