Identifiable Data Files

The Centers for Medicare & Medicaid Services (CMS) makes identifiable data files (IDFs) available to certain stakeholders as allowed by federal laws and regulations as well as CMS policy. IDFs contain protected health information (PHI) and/or personally identifiable information (PII) and CMS is committed to ensuring this information is protected.

CMS allows organizations to access IDFs, also known as research identifiable files (RIFs), for research purposes. Requests for these data files require a research protocol and Data Use Agreement (DUA), among other documents, and are reviewed by CMS’s Privacy Board. For more information on the research request process, please visit the Research Data Assistance Center (ResDAC) website at:

Page Last Modified:
12/01/2021 07:02 PM