National Death Index (NDI) Cause of Death Information is now available from 1999-2016 for Medicare beneficiaries and 1999-2013 for Medicaid recipients.

CMS is pleased to announce the availability of Medicare Advantage (Part C) Encounter Data Research Identifiable Files (RIFs).  These files are created from data submitted to CMS by Medicare Advantage Organizations (MAOs) that provide services to beneficiaries under the Medicare Part C benefit.

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The Research, Statistics, Data & Systems page on the CMS website contains a number of links to CMS statistical information. You will find links to reports, publications, downloadable public use files, and descriptions of data available.

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Interested in requesting CMS data? Visit our CMS Data Request Center where you will find resources for preparing and submitting your request.

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Our guide to Getting Started with CMS Data will provide you with the resources to help you understand if CMS data is right for your project.

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Getting Started

New to CMS data? Check out this guide to Getting Started. You'll find resources on:

  • CMS data strengths and limitations
  • choosing the right files
  • preparing a data request
  • data analysis tips