CMS is delaying until February 1, 2017 enforcement of previously-adopted regulations that require physicians and other eligible professionals who prescribe Part D drugs to be enrolled in Medicare (or have a valid opt-out affidavit on file) for their prescriptions to be covered under Medicare Part D. CMS is delaying enforcement so that it “minimizes the potential for disrupting beneficiaries’ access to needed Part D medications.” The announcement and various CMS guidance documents regarding the enrollment requirements are available here.