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Asked: 2026-06-02T06:07:37+00:00

I need to download a file from http://nppes.viva-it.com/NPI_Files.html , the problem is that every

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I need to download a file from http://nppes.viva-it.com/NPI_Files.html, the problem is that every month the filename changes. I was hoping to be able to use a wildcard in the filename, such as NPPES_Data_Dissemination_*.zip but that doesn’t work with WebClient. Are there any other ways to download this file programatically using c# without knowing the exact name of the file. There will always be 1 and only .zip file on this webpage…the program just won’t know exactly what that name is. Any ideas would be appreciated!!

Thanks!

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1 Answer

  1. Editorial Team

    There is no way to request a resource whose name you don’t know over HTTP.

    Instead, make a WebRequest for http://nppes.viva-it.com/NPI_Files.html and parse it for the string you’re interested in, then request that; alternatively, get the NPI folks to provide a consistent name for the file (since there’s only one, perhaps it should be called _latest.zip or something?)

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