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The Centers for Medicare & Medicaid Services quietly announced it will end the temporary Part D Premium Stabilization Demonstration after contract year 2026. That means the federal “bailout” for some prescription drug plan premiums goes away in 2027 — and Washington wants you to believe the market is ready to stand on its own. Spoiler: the math and the politics say otherwise.
CMS pulls back the Premium Stabilization Demonstration
CMS said plan sponsors now have “sufficient experience under the redesigned Part D benefit” to price plans without the extra federal help. The agency released preliminary bid numbers for 2027 and named the national average monthly bid amount (NAMBA) at $296.05 and the national base beneficiary premium at $41.33. Administrator Dr. Mehmet Oz framed the move as stabilizing the market and stopping what he called a Biden-era subsidy to insurers.
Why Part D costs shot up — and who’s paying
The bigger story is why CMS provided the temporary support in the first place. The Inflation Reduction Act retooled Part D with price negotiations, inflation rebates, a cap on out-of-pocket costs, and other changes. Insurers’ 2025–2026 bids implied roughly a 35% higher per-enrollee cost for 2026 than previously expected. CBO and other analysts now estimate that Part D spending over the next decade is hundreds of billions higher than earlier projections — one CBO framing suggested about $500 billion more, while some Republican committees point to roughly $600 billion. The Government Accountability Office also noted the demonstration cost was expected to be about $9.8 billion for 2025–2026.
What this means for seniors and premiums
CMS says most beneficiaries will see premiums rise by less than $10, and some may even pay less. That may be true in places where plan competition stayed strong. Independent analysts like KFF warn that impacts will vary a lot by region and by whether a beneficiary is in a stand‑alone PDP or an MA‑PD. Ending the demonstration removes a clear federal payment that helped hold down premiums in 2026, so some plans and areas likely will see higher premiums in 2027 — and seniors deserve to know where and how much.
Politics, accountability, and what to watch next
Republican lawmakers are rightly demanding answers. House Energy and Commerce Chair Brett Guthrie and House Budget Chair Jodey Arrington point to the CBO revisions as proof that the Inflation Reduction Act’s Part D changes did not deliver the fiscal savings promised. That’s a fair political jab: Democrats sold an expensive guarantee, and now taxpayers are left covering the surprise tab. CMS should publish the modeling that supports its decision to end the demonstration, and CBO should explain the line items behind its big upward revisions. Voters and seniors need transparency — not quiet policy shifts wrapped in bureaucratic jargon.
