What is the difference between an NPN and NIPR?

NIPR (the National Insurance Producer Registry) is the organization; an NPN (National Producer Number) is the identifier. NIPR, an affiliate of the National Association of Insurance Commissioners, operates the online licensing gateway and the Producer Database that states use to process applications and renewals. The NPN is the unique number assigned to each individual and business entity during the licensing application process, and licensees use it to renew licenses, verify status, and identify themselves across states.