Skip to Main Content

National Provider Identifier Standard (NPI)

The National Provider Identifier (NPI) is a Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification Standard. The NPI is a unique identification number for covered health care providers. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA. The NPI is a 10-position, intelligence-free numeric identifier (10-digit number). This means that the numbers do not carry other information about healthcare providers, such as the state in which they live or their medical specialty. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions.

As outlined in the Federal Regulation, The Health Insurance Portability and Accountability Act of 1996 (HIPAA), covered providers must also share their NPI with other providers, health plans, clearinghouses, and any entity that may need it for billing purposes.

More detailed information is available on the pages listed in the left hand column of this page.

NPI Frequently Asked Questions (FAQs)

NPI FAQs are posted on the CMS website and continue to be updated as new information is available. To view these FAQs, see the "Related Links Inside CMS" section below. To find the latest FAQs, click on the arrows next to "Date Updated".