Seniors advocacy groups joined dozens of other patient groups, unions and insurers in a letter urging CMS to once again extend Part B penalty relief for Medicare-eligible individuals who are, or were recently enrolled in, exchange coverage and could otherwise be charged a late fee for failing to enroll on time. The stakeholders say they appreciate CMS' effort to waive the penalty and notify seniors who had mistakenly enrolled in exchange coverage, but many seniors are still unaware of the...