Medicare Administrative Contractors will be notifying practices through May which clinicians associated with their taxpayer identification number must participate this year in the Merit-based Incentive Payment System, one of two new payment pathways for clinicians under the Medicare Access and CHIP Reauthorization Act of 2015, the Centers for Medicare & Medicaid Services announced today. Physicians, physician assistants, nurse practitioners, clinical nurse specialists and certified registered nurse anesthetists should participate in MIPS for the 2017 transition year if they annually bill more than $30,000 in Medicare Part B allowed charges and provide care for more than 100 Part B-enrolled Medicare beneficiaries. For more on MACRA and MIPS, visit and