NPPES Registration FAQs
A National Provider Identifier (NPI) is a ten digit identification number, unique to each individual, that is issued to healthcare providers in the United States. The NPI is ten digits in length. The first nine digits are identifying digits, and the last is a “check digit.” The “check digit” assists in identifying invalid NPIs. NPI numbers identify providers with payers throughout the healthcare industry and ensure payments are directed to the appropriate party. You can think of your individual NPI as an SSN for individuals.
NPIs are broken down into two categories, Type 1 for individual providers and Type II for organizational NPIs. We cover them in more detail below and answer a number of frequently asked questions.