U S Department of Health and Human Services www.hhs.gov

Search Frequently Asked Questions


NPI Files

  • NPPES Data Dissemination (Oct 27, 2009) - ZIP format (337 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.