How to Read Your Annual Notice of Change

What the ANOC is

Every Medicare plan — Medicare Advantage and Part D drug plans — is required to send enrolled members an Annual Notice of Change by September 30 each year. The document summarizes every material change to the plan for the coming plan year, which begins January 1.

The ANOC is not marketing. It is a regulatory disclosure. Plans are required to tell you what changed. The challenge is that the document is often long, dense, and formatted in a way that makes it easy to set aside.

Most people do not read it carefully. That is understandable. It is also a missed signal.

What to look for

You do not need to read the entire document. Focus on three areas:

1. Premium changes. What is the new monthly premium? If it increased significantly, that alone may be worth comparing against alternatives during Open Enrollment.

2. Drug formulary changes. Look for a section on formulary or drug coverage changes. Check whether any of your current prescriptions are listed as changed, removed, or moved to a different tier. A tier change can shift your annual drug costs by hundreds of dollars.

3. Network changes. For Medicare Advantage plans, check whether your primary care doctor, specialists, or preferred hospital are still in-network. Network changes are sometimes buried in the ANOC or listed as a separate enclosure.

If none of these affect you, the review is short. If any of them do, you have until December 7 to compare alternatives.

What the ANOC does not tell you

The ANOC tells you what changed about your current plan. It does not tell you whether a different plan would serve you better. That comparison requires a separate step: running your current drug list through Medicare.gov's Plan Finder, or talking through your situation with a SHIP counselor.

The ANOC is the signal. The comparison is the work.

If you did not receive an ANOC

If you are enrolled in a Medicare Advantage or Part D plan and did not receive an ANOC by early October, call your plan's member services number. Plans are required to send it. You can also request a copy directly.

If you are on Original Medicare only (Parts A and B, no Advantage plan, no Part D), you will not receive an ANOC — because there is no plan to change. Your coverage is set by Medicare itself, not a private plan. Changes to Original Medicare are published separately in the annual Medicare & You handbook.

How this applies to you

If you take regular prescriptions: The formulary section is the most important part of the ANOC. Check your drugs by name. A drug that was tier 2 last year may be tier 3 or removed entirely.

If you have a Medicare Advantage plan: Check the network section. Doctor and hospital network changes are one of the most common reasons people switch plans during Open Enrollment.

If you are helping a parent: Sit down with the ANOC together. It is a short conversation with a clear purpose: does anything here affect their doctors or medications?

The four questions

How does that apply to me? Which changes in the notice actually affect your prescriptions, doctors, or costs?

What am I assuming? Are you assuming nothing changed because the envelope looked routine?

What should I verify? Your drug list against the new formulary. Your doctors against the new network. Your premium against alternatives.

What might be harder to change later? Open Enrollment closes December 7. After that, your options narrow until the next enrollment window.

How Fern helps

If you have a notice and are not sure what it means for your situation, Fern can help you work through it. Bring the notice. Fern can help you turn the changes into specific questions and next steps.