MEDICARE ACCESS AND CHIP REAUTHORIZATION ACT (MACRA) The Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) is a bipartisan legislation signed into law on April 16, 2015. Repeals the flawed Sustainable Growth Rate (SGR) Formula Creates a new reimbursement structure for healthcare providers by establishing two payment tracks, rewarding clinicians for value over volume and streamlines other existing quality reporting programs into one new system: