Medicare Part D helps manage the rising cost of your prescriptions. Understanding how coverage works helps you choose the right plan.
Medicare Part D plans are offered by private insurance companies that are contracted and approved by Medicare. They're available as a standalone plan (PDP) if you have Original Medicare, or they may be bundled into a Medicare Advantage plan (MAPD). Having credible drug coverage is required when you join Medicare — failing to enroll when first eligible can result in a permanent late-enrollment penalty.
You pay full (discounted) cost for medications until your deductible is met. Some plans waive the deductible for certain drug tiers. After the deductible, you enter Initial Coverage.
You pay a copay per prescription based on your plan's formulary tiers — typically organized as generics, preferred brands, non-preferred brands, and specialty drugs.
Once you and the insurer together have paid a set amount, you enter the coverage gap. You'll still receive discounts — typically paying 25% for brand-name drugs.
After your out-of-pocket spending reaches the catastrophic threshold, your plan pays 95% of formulary drug costs for the remainder of the year.
Each Part D plan has a formulary — a list of covered drugs organized into pricing tiers. Generic drugs are typically on lower tiers with lower copays, while specialty or brand-name drugs are on higher tiers with higher cost sharing.
It's critical to verify that your specific medications are covered on the plan's formulary before enrolling. The wrong plan could leave you paying full price for a medication you take regularly. We run this analysis for every client at no charge.
If you have Original Medicare with a Supplement, you'll need a standalone Part D plan (PDP) to cover prescriptions. If you're enrolled in a Medicare Advantage plan, look for an MAPD plan that bundles drug coverage — it's simpler and often cost-effective.
Don't miss your enrollment window. If you delay enrolling in a Part D plan without other credible drug coverage, you may face a late-enrollment penalty that's added permanently to your monthly premium.
We'll check your specific prescriptions against available plans in your area — at no cost to you.