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On average, Part D premiums are rising by $1 in 2015, to $32 per month. But that average is for all plans. Some of the most popular plans are boosting premiums by more than that, s ays Ross Blair, senior vice-president of eHealthMedicare.com, which includes tools to help people compare policies.
In 2014, retirees with incomes above the threshold paid anywhere from $42 to $231 more per person each month for Part B. The premium amounts paid by Part D beneficiaries depends on the plan they chose â with higher-income individuals paying anywhere from $12 to $69 more a month for prescription coverage in 2014.