Medicare Part D
Compare drug plans using the actual medication list, pharmacy, formulary, and estimated annual cost.
Where drug coverage comes from
You can get Part D through a standalone Medicare drug plan with Original Medicare, or through most Medicare Advantage plans that include drugs. Joining a standalone plan while in a Medicare HMO can conflict with the HMO’s drug coverage rules. Ask whether the exact health plan includes Part D before making a second enrollment. Medicare’s separate plan comparison lists locally available drug options.
Official source: Medicare: Part D basics ↗ · Medicare: Joining a plan ↗ · Medicare: Compare plans ↗
Compare a real medication list
Use the exact drug name, strength, dose, monthly quantity and pharmacy for each medication. Check whether the drug is on the plan’s formulary, its tier, deductible treatment and restrictions such as prior authorization, step therapy or quantity limits. A covered drug at a nonpreferred pharmacy can cost more than at a preferred pharmacy; the lowest premium may not mean the lowest yearly cost.
Official source: Medicare: What drug plans cover ↗ · Medicare: Drug plan rules ↗ · Medicare: Pharmacy networks ↗
The 2026 covered-drug limit
For 2026, the out-of-pocket limit for drugs covered by a Medicare Part D plan is $2,100. It applies to covered Part D costs, not the plan’s monthly premium or a prescription the plan does not cover. Assistance such as Extra Help can reduce eligible people’s costs further. Compare formulary coverage and pharmacy pricing before relying on the cap.
Official source: Medicare: 2026 drug cap and payment option ↗ · Medicare: Part D costs ↗ · SSA: Apply for Extra Help ↗
Spreading a bill is not a discount
The Medicare Prescription Payment Plan can spread your covered-drug out-of-pocket payments across the calendar year, which may help if large drug costs occur early. It does not lower the amount you owe and is available through plans with Medicare drug coverage. Plan premiums remain separate. Review how much would become due monthly and whether the timing helps your budget.
Official source: Medicare: Prescription Payment Plan ↗ · Medicare: 2026 drug cap and payment option ↗
Avoid a coverage gap
If you go 63 or more consecutive days after becoming eligible without Part D or other creditable prescription coverage, a later Part D enrollment may carry a continuing penalty. Keep your former plan’s creditable-coverage notice and dates. Before changing employers or retiree coverage, ask how the change affects drug creditability and any special enrollment right.
Official source: Medicare: Creditable drug coverage ↗ · Medicare: Part D costs ↗