NPI Number Frequently Asked Questions
The Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification required adopting a standard for a unique health identifier for healthcare providers. The NPI Final Rule, published on January 23, 2004, established the NPI unique identification number as this standard. Covered healthcare providers, health plans, and clearinghouses must use NPIs in administrative and financial transactions. The Centers for Medicare & Medicaid Services (CMS) developed the National Plan and Provider Enumeration System (NPPES) to assign these unique identifiers. For more information on how to apply for an NPI, visit https://nppes.cms.hhs.gov/NPPES/Welcome.do. What Is an NPI? A National Provider Identifier (NPI) is a