On August 1, 2012, CMS is holding a national provider call on its proposals for the Physician Value-Based Payment Modifier under the Medicare physician fee schedule (MPFS). The Value Modifier was mandated by the ACA as a way to reward physicians for providing higher quality and more efficient care. In the final 2012 MPFS rule, CMS adopted performance measures to be used for future MPFS Value Modifier payment adjustments. The proposed 2013 MPFS rule sets forth the Value Modifier payment methodology and phase-in plans