Welcome to ResDAC's CMS Data Request Center!
This section will provide you with resources for preparing and submitting your CMS data request. CMS maintains three different categories of data files that can be used for research including Research identifiable, Limited Data Sets, and Public Use files. Select the links under the CMS Data Request Center navigation bar to review the request process and materials necessary to submit a request for data under each category.
Are you unsure which category of data is right for your research?
For an outline of the difference between the three categories, please see the Knowledgebase article titled Differences between RIF, LDS, and PUF data files.
For more information about the Privacy Act and HIPAA as it relates to the release of CMS data, please see the Knowledgebase article titled Federal Regulations Relating to the Release of CMS Data.