For a Medicare Part D plan, you'll pay:
- A set monthly premium.
- A Part D deductible (if applicable).
- Copayments or coinsurance for your drug costs.
- Costs in the coverage gap (if you reach the gap).
- All your other Medicare or Medicare Supplement costs.
Your actual drug costs can also change based on:
- The drugs you use and if they're covered.
- The plan you choose.
- Using an in-network pharmacy.
- If you get extra help paying for Part D.
- If you have to pay a late enrollment penalty.