Using Internet Archive to Find Historical Documents and Downloadable Data Files


The Internet Archive is a useful resource for finding historical copies of the Centers for Medicare and Medicaid Services (CMS) websites, reports or statistics that are no longer available.

Current Version Date:
The Internet Archive is an Internet Library that has archived over 270 billion web pages from 1996 to the present.  The Internet Archive includes several thousand capture dates for the CMS’s website. Previously captured CMS websites may hold historical information that is no longer found on the current site.

Between 2001 and the present, CMS has used two URLs.

Between 1996 and 2001, CMS was known as the Health Care Financing Administration (HCFA).

The Internet Archive supports searching a specific URL, but does not support a keyword search. To begin searching,

  • Type, or a specific website URL in the search box.
  • Then select from the archived dates available.
  • Navigate to different areas of the historical site by clicking either the black bars at the top of the page or the dates with the colored circles. As mentioned previously, a keyword search won’t work with the historical site, it will take you directly to the current site ( 

Example of what a user may see once a date is selected.

This image shows the contents of the “Statistics and Data” page.

Medicare National Enrollment Trends for 1966-1998