Coverage guide
How to Check Which Part D Plans Cover GLP-1 Medications
Part D coverage for GLP-1 medications varies by plan, so the fastest path is the Medicare Plan Finder: enter your ZIP code and current medications, then compare formulary tiers for the specific drug name (semaglutide, tirzepatide, liraglutide), the prior authorization requirements, and the pharmacy network for your preferred pharmacy.\n\nThe GLP-1 Medicare Directory's resource listings include plan-participation notes per prescriber so you can pair a prescriber with a plan that fills. A state SHIP counselor can do the same comparison with you for free.\n\nRed flags: plans whose formulary shows the drug as non-covered at every tier; plans requiring evidence of a secondary diagnosis you do not have; and mail-order-only fills if you need in-person pickup.
What to check next
Confirm the exact medication, diagnosis, formulary tier, prior authorization requirement, step therapy status, and pharmacy network before relying on a listing.
Useful documents
Plan formularies, Evidence of Coverage documents, pharmacy directories, and written prior-authorization criteria are more reliable than verbal summaries alone.