Unique Physician Identification Numbers (UPIN)

Unique Physician Identification Numbers (UPINs) were assigned to physicians and other healthcare professionals by Centers for Medicare & Medicaid Services (CMS) when they enrolled in Medicare.

UPINs are used to identify the individual who ordered or referred the service entered in a Medicare claims submitted by physicians/practitioners,

In 2007, UPINs transitioned to the National Provider Identifier (NPI). After 2007, NPIs are used exclusively to identify physicians and other providers.

Search by Unique Physician Identification Numbers (UPIN) to find the providers and organizations that have the entered UPIN.


NPIUPINNamePrimary SpecialtyAddressTypeHas Referral Data?
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  Referral DataYou can view referral as well as competitor data and purchase referral data from the 2009 to 2015 Time Period for this provider/organization. Click here for more information.
  Individualse.g., physicians, dentists, nurses, chiropractors, pharmacists, physical therapists, etc
  Organizationse.g., hospitals, home health agencies, ambulance companies, health maintenance organizations, durable medical equipment suppliers, pharmacies, etc

Can't find what you're looking for?
The NPI registry is updated regularly but not in real time. Additionally, some providers in the database do not keep their information up-to-date when their practice changes or moves.