Blog: Mark Segal, GE Healthcare:  Medicare is shifting rapidly to value-based and integrated care. Notably,  the Medicare Access & CHIP Reauthorization Act of 2015 (MACRA) initiated major changes in Medicare physician payment.  In addition to ending the long reviled Sustainable Growth Rate (SGR) used to update Medicare professionals’ payments, MACRA creates two new value-based programs, which will rely on interoperable health IT (HIT).