
July 28, 2025
CMS Reins In Part D PDP Premium Stabilization Program The Centers for Medicare & Medicaid Services (CMS) released preliminary technical Medicare Part D bid information for contract year 2026. It released the national average monthly bid amount (NAMBA) and base beneficiary, which are used in bid preparation. CMS also announced it was again funding a special premium stabilization demonstration started in 2025 to keep premiums from rising dramatically. The culprit for rising premiums is largely the passage of cost-sharing limits in Part D in the Democrats’ Inflation Reduction Act. The Democrats did not adequately fund the changes and therefore pushed many of the costs to plans, which then had to increase premiums and cost-sharing and make other reductions. The IRA changes have badly impacted the financial stability of the standalone Part D offerings (PDPs). For 2026, the generosity of the demonstration will be less. In 2026, CMS is reducing the uniform base beneficiary premium



