Many Medicare Part D Stand-Alone Drug Plan Enrollees Will See Modest Premium Increases for 2027, But Others Could Pay Much More If They Don’t Switch Plans Authors: Juliette Cubanski, Nancy Ochieng, and Meredith Freed Published: Oct 2, 2026

https://www.kff.org/medicare/many-medicare-part-d-stand-alone-drug-plan-enrollees-will-see-modest-premium-increases-for-2027-but-others-could-pay-much-more-if-they-dont-switch-plans/ The Centers for Medicare & Medicaid Services (CMS) has just released information about Medicare Part D plans for 2027, including plan availability and premiums for the coming year. The agency emphasized stability in the Part D prescription drug plan (PDP) marketplace for 2027 (as it did for 2026) and estimated only a modest $1 increase in the average monthly PDP premium from $35 to $36. KFF analysis of PDP availability and premiums for 2027 shows a mixed picture, with modest premium increases for many Part D enrollees for their current plan but steeper increases for others, and a reduction in the number of PDP options for the fourth year in a row. Key takeaways include: