A recent OIG report examines the extent to which practitioners have reassigned Medicare benefits – a mechanism by which Medicare practitioners allow third parties to bill and receive payment for services that they rendered. The OIG found 37% of the Medicare reassignments in 2007 should not have been active (usually because the practitioners were no longer employed by the party to which their reassignments were made). The OIG recommends that CMS: (1) implement its plans to revalidate practitioner enrollment information, (2) educate practitioners on the need to provide current information, (3) implement plans to update Provider Enrollment, Chain, and Ownership System (PECOS) from other data sources, and (4) follow up with practitioners for whom payments were made through reassignments that should not have been active. In response, CMS discussed steps it is taking to address these issues.