Costs for Medicare drug coverage

You'll make these payments throughout the year with Medicare drug coverage:

Your actual drug coverage costs will vary depending on:

  • Your prescriptions and whether they’re on your plan’s list of covered drugs ( formulary ).
  • What “tier” the drug is in.
  • Which drug benefit phase you’re in (like whether you’ve met your deductible, or reached your out-of-pocket limit).
  • Which pharmacy you use (preferred in-network, in-network, mail order, or out of network). Your out-of-pocket drug costs may be less at a preferred pharmacy because it has agreed with your plan to charge less. How do pharmacy networks affect what I pay?
  • Whether you get Extra Help paying your Medicare drug coverage costs.

Look for specific plan costs.

The cost of a one-month supply of each Part D-covered insulin is capped at $35, and you don't have to pay a deductible. If you get a 60- or 90-day supply of insulin, your costs can’t be more than $35 for each month’s supply of each covered insulin.

Need help paying for Medicare drug coverage costs? Visit 5 ways to get help with prescription costs for more information. 


Related resources

5 ways to get help with prescription costs

Medicare Prescription Payment Plan