NPI Files


Important Information: CMS is pleased to announce that the full replacement monthly NPI File (also referred to as the NPPES Downloadable File) has now been revised to include deactivated NPIs and the date of deactivation within the file. The deactivated NPIs in the file can be displayed by filtering on the column name "NPI Deactivation Date". In addition, CMS will also make available a weekly incremental NPI file and a full replacement monthly NPI deactivation file. Please read the announcement found on the CMS NPI Data Dissemination page at https://www.cms.gov/Regulations-and-Guidance/Administrative-Simplification/NationalProvIdentStand/DataDissemination.html regarding these files.

Starting June 18, 2018, the zipped NPPES Downloadable file will also include the following 3 new reference files:

  1. Other Name Reference File - this file contains additional Other Names associated with Type 2 NPIs
  2. Practice Location Reference File - this file contains all of the non-primary Practice Locations associated with Type 1 and Type 2 NPIs
  3. Endpoint Reference File - The Endpoint information will be temporarily unavailable. Thank you for your patience as we make improvements!
Detailed information about the new files will be included in the Data Dissemination File - Readme file.

Full Replacement Monthly NPI File
  • NPPES Data Dissemination (October 09, 2018) - ZIP format (659 MB)

  • Beginning with the May 2008 file, the size of the .csv Header File increased because we added Authorized Official data elements to it that were inadvertently not previously included. As a result of the larger size, the .csv Header File can no longer be opened in Excel. Even so, the .csv Header File is small enough to be opened by a simple text editor like Notepad. As always, the .csv data file must be opened with a text editor capable of opening large files. Two examples are TextPad and UltraEdit.

    The data dissemination file exceeds 4 GB. Older file compression utilities may not be able to extract this file properly. Please check your file compression utility for any known problems and the latest version in order to avoid any problems extracting this file. Utilities, such as WinZip and 7-zip, have been successful in extracting the file.

Full Replacement Monthly NPI Deactivation File
Weekly Incremental NPI Files