NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

National Provider Identifier (NPI) to State License Crosswalk

The National Provider Indetifier (NPI) became the national standard identifier in May 2007.

The Centers for Medicare & Medicaid Services (CMS) has developed the National Plan and Provider Enumeration System (NPPES) to assign unique identifiers to health care providers. The NPPES files contain all of the FOIA-disclosable data for active and deactivated providers in NPPES. The raw NPPES files have up to 15 provider licenses per NPI.

Jean Roth created the NPI to state license crosswalk below from the National Plan and Provider Enumeration System (NPPES) downloadable data file for greater ease of use. Around 25% of NPIs have more than one provider license associated with it.

One limitation of this dataset is that the provider had to include their state license number on the NPI application in order for the license number to appear here.

Processed versions of the raw NPPES data these files are made from is also available.

Updates and changes.


Stata
SAS
CSV
  statelic.dta     statelic.sas7bdat     statelic.csv  

To report problems or if you have comments or suggestions , e-mail Jean Roth at jroth@nber.org

Last Update Created by Jean Roth October 17, 2013
 
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