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.
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.