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This booklet was created to help you become more familiar with the National Provider Identifier (NPI). The Administrative Simplification provisions of the Health Insurance Portability and Accountability Act of 1996 (HIPAA) mandated the adoption of a standard, unique health identifier for each health care provider. The NPI Final Rule, published on January 23, 2004, established the NPI as this standard. Covered entities under HIPAA are required by regulation to use NPIs to identify health care providers in HIPAA standard transactions.
Billing for Clinical Services