The NPI Manual

The NPI Manual is a comprehensive guide for assigning and managing National Provider Identifiers (NPIs), which are unique 10-digit numbers used by healthcare providers in the U.S. to identify themselves in billing and medical records. It ensures consistent and accurate identification across different healthcare systems, reducing errors and improving efficiency. The manual provides detailed instructions on applying for, updating, and using NPIs, helping providers, insurers, and administrators maintain standardized data for healthcare transactions and reporting.