Identifiable Data Files

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.

The process to request IDFs, add new IDFs to an existing request, or to re-use IDFs for a different project depends on the type of organization and the purpose for requesting the data. Please refer to the chart below to determine the appropriate contact. If you do not see your organization type, please contact us at

All requests for Data Use Agreement (DUA) contact changes, DUA extensions, and DUA closures are processed via the DUA mailbox. Please use the navigation bar on the left to find instructions for completing these actions.


Organization Type Contact
CMS Sponsored Program, CMS Awardees, CMS Grantees (including CMMI model participants) CMS Project Officer
OIG/GAO Audits CMS Audit Management Contact
Qualified Entities Research Data Assistance Center (ResDAC)

Researchers* [Research Identifiable Files (RIFs)]

  • Academic/non-profit
  • Federal grantees
  • Federal agencies
  • State agencies
  • Innovators
Research Data Assistance Center (ResDAC)

State Medicaid Agencies (care coordination and program integrity)

State Data Resource Center (SDRC)

*Note: Researchers may also request Limited Data Set (LDS) files. Please use the navigation bar on the left for more information on the LDS file request process.

Page Last Modified:
09/06/2023 04:57 PM