Each fall, Medicare beneficiaries start receiving a flood of information about their coverage options. This is meant to help you prepare for the Medicare Annual Enrollment Period (October 15 – December 7) — your once-a-year opportunity to review and adjust your Medicare plan.
Among all the mail you’ll receive, there’s one document you must pay attention to: the Medicare Plan Annual Notice of Change (ANOC).
This important letter comes directly from your current Medicare plan provider and is typically delivered by September 30. It explains how your plan’s coverage, costs, and benefits will change in the upcoming year — giving you time to decide whether to stay with your plan or explore other options before the Annual Enrollment Period begins.
Understanding Your Medicare Plan Annual Notice of Change
Your ANOC gives you a detailed overview of how your Medicare Advantage or Medicare Part D Prescription Drug Plan will change starting January 1. Reviewing it carefully can help you avoid surprises — like higher costs or changes to your coverage — and make sure your plan still meets your health and financial needs.
Here’s what to look for when reviewing your Medicare Plan Annual Notice of Change, along with key questions to guide you.
1. Coverage Changes
Your plan may update which services, treatments, or benefits are covered.
Ask yourself:
Are there any new benefits added to my plan?
Have any services I use been changed or removed?
Have my health needs changed, and will this plan still cover the care I require?
2. Provider Network Changes
Medicare Advantage plans can change which doctors, hospitals, and specialists are included in their network each year.
Ask yourself:
Are my current doctors still in the plan’s network?
Have any providers I rely on been removed?
If they’re not in the network, am I willing to switch to another provider?
3. Drug List and Pharmacy Network Changes
If you have a Medicare Part D plan or a Medicare Advantage plan with drug coverage, your plan’s formulary (list of covered drugs) may also change.
Ask yourself:
Are my current prescriptions still covered?
Have any medications been moved to a different pricing tier?
Is my local pharmacy still in the network, and is it a “preferred” pharmacy that offers the best pricing?
4. Cost Changes
Your ANOC will outline updates to your plan’s premium, deductible, copays, coinsurance, and out-of-pocket limits.
Ask yourself:
Is my monthly premium going up or down?
Have deductibles or copays changed?
How will these cost changes affect my total out-of-pocket expenses for next year?
If anything is unclear or you haven’t received your ANOC letter, call your plan’s customer service number (listed on your member ID card) to request a copy or clarification.
Why Reviewing Your Medicare Plan Annual Notice of Change Matters
Every year, insurance companies update their Medicare Advantage and Medicare Part D plans to reflect new benefits, pricing structures, and network partnerships.
Taking time to review your Annual Notice of Change ensures you:
- Stay informed about new plan benefits and costs
- Avoid surprises after January 1
- Choose a plan that fits your current health and budget needs
Whether you decide to stay with your existing plan or explore new options during the Medicare Annual Enrollment Period, understanding your ANOC helps you make that decision with confidence.