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A Medicare Part D formulary is a list of the drugs the plan covers, organized into tiers with different out-of-pocket costs. Many, or all, of the products featured on this page are from our ...

High-tier generic drug placement in Medicare Part D has increased over time, but it may be related to a drug’s clinical profile and availability of substitutes rather than preferred brand-name drug ...

Medicare Part D is prescription drug coverage for people enrolled in Original Medicare. Part D plans must cover at least two drugs from each of the most commonly prescribed medication categories.