UPDATE

The enforcement deadline has been delayed until  February 1, 2017.  CMS strongly encourages prescribers of Part D drugs (except those who meet the definition of “other authorized prescribers”) to submit their Medicare enrollment applications or opt-out affidavits to their Medicare Administrative Contractors (MACs) before August 1, 2016.  More information on this change is available at Prescriber Enrollment Delay March-2016.