The GAO has examined how CMS has used increased Medicare Integrity Program (MIP) funding, which reached $1 billion in 2010, to address Medicare program integrity. The GAO concluded that while CMS has reported that it measures MIP’s performance with goals related to reductions in the improper Medicare payment rates, CMS officials with direct responsibility for MIP generally do not connect measurements of effectiveness of MIP activities with these goals. GAO recommends that CMS communicate the linkage between MIP activities and the goals for reducing improper payments and that CMS expeditiously improve the reliability of data used to calculate its measurement of the effectiveness of MIP activities. HHS concurred with these recommendations.