News: 3.4 Million Seniors Hit Medicare 'Doughnut Hole' (HealthDay) 3.4 Million Seniors Hit Medicare 'Doughnut Hole' (HealthDay) ================================================================================ by team on 21 August, 2008 06:47:35 HealthDay - THURSDAY, Aug. 21 (HealthDay News) -- In 2007, about 3.4 million Americans enrolled in the Medicare Part D drug plan reached a gap in their prescription coverage known as the "doughnut hole," leading some of them to stop taking prescribed drugs, says a Kaiser Family Foundation study released Thursday.