The GAO has issued a report on options for CMS to use in developing its program to provide physicians with confidential feedback on resources used to provide care to Medicare beneficiaries. Among other things, the report points out that while a literature review suggests that providing such feedback has no more than a moderate influence on physician behavior, “the potential influence of feedback from CMS on Medicare costs may be greater, in part because of the relatively large share of physicians’ practice revenues that Medicare typically represents.”