Medicare Part D helps cover the cost of prescription medications. These plans are offered by private insurance companies approved by Medicare.
Part D coverage can help reduce out-of-pocket costs for both brand-name and generic prescription drugs.
What is Medicare Part D?
Medicare Part D is prescription drug coverage available to people enrolled in Medicare.
You can get Part D coverage in two ways:
- Through a standalone Prescription Drug Plan (PDP) that works with Original Medicare
- Through many Medicare Advantage plans that include prescription drug coverage (MAPD plans)
What Does Medicare Part D Cover?
Each Part D plan has its own list of covered medications, called a formulary.
Most plans help cover:
- Generic medications
- Brand-name drugs
- Common maintenance medications
- Specialty prescriptions
Covered drugs and costs vary by plan.
How Medicare Part D Works
When enrolled in a Part D plan, you typically pay:
- A monthly premium
- Deductibles (if applicable)
- Copays or coinsurance for medications
Your costs depend on:
- The medications you take
- The pharmacy you use
- Whether your drugs are on the plan’s formulary
Late Enrollment Penalty
If you do not enroll in Medicare Part D when first eligible — and go without creditable prescription drug coverage for too long — you may face a permanent late enrollment penalty.
The penalty may increase your monthly premium for as long as you have Part D coverage.
When Can You Enroll?
You can enroll in a Part D plan during:
- Take regular prescription medications
- Want protection against high drug costs
- Need access to retail or mail-order pharmacy options
- Want additional prescription coverage beyond Original Medicare
Even individuals who currently take few medications may consider enrolling to avoid future penalties.
Get Help Comparing Medicare Part D Plans
Prescription drug plans vary by carrier, pharmacy network, and medication coverage. A licensed broker can help you compare available options and find a plan that fits your prescription and budget needs.