Your ANOC Letter: The September Mail That Decides What You Pay Next Year

By Austin Tyler · Tyler Insurance Group · Updated August 2026

 

Before you recycle a single piece of September mail this year, find one envelope first. It is from your Medicare plan, it is thicker than a bill, and it is called the Annual Notice of Change, the ANOC. Inside is a side-by-side list of everything your plan will change on January 1: your premium, your copays, your drug list, your pharmacies, your doctors, your extras. Plans must get it to you by September 30 precisely so you can act during fall enrollment. Ten minutes with it now beats a February phone call to us later, and yes, we take a lot of those February calls.

 

Why this letter matters

 

The ANOC is the only advance, written warning you get about next year's plan changes. Read it against the six-point audit below before the Annual Enrollment Period (October 15 to December 7), because that window is your chance to switch if the changes hurt you. If it never arrives, call your plan and request it.

 

The six-line audit: read your ANOC against this list

1. The premium and the maximum out-of-pocket. The premium change is obvious; the maximum out-of-pocket (MOOP) is the number that matters in a bad health year. A $0-premium plan that raises its MOOP by a thousand dollars got more expensive in the way that counts.
2. Your drugs. Check each medication against next year's formulary: still covered, same tier, any new prior authorization or quantity limits. Tier changes move real money, and this is where most ANOC pain hides.
3. Your pharmacy. Preferred networks shift. The same plan can price the same drug very differently at a pharmacy that quietly moved from preferred to standard.
4. Your doctors and hospital. Networks are renegotiated every year. Confirm your physicians and hospital system are in-network for the coming year, not just this one.
5. The copays you actually use. Specialist visits, imaging, outpatient procedures, hospital days: check the handful of line items your health history says you will use again.
6. The extras you count on. Dental, vision, hearing, OTC allowances, and gym benefits have been trimmed industry-wide. If an extra is why you chose the plan, verify it survived.

Know what you are holding

 

The ANOC: your plan continues, with changes

The ANOC compares this year to next year for a plan that will still exist on January 1. It is not a bill and not an ad, and it deserves a place with your plan documents; if a January charge contradicts it, that paper trail is your friend.

 

The non-renewal notice: a different letter entirely

If your envelope instead says the plan is ending, you are holding a non-renewal notice, and the stakes are higher: it grants a Special Enrollment Period and, in many cases, guaranteed-issue rights to buy certain Medigap policies with no health questions. Those rights have deadlines. A non-renewal letter should move to the top of the pile, not the recycling bin.

 

Found a change you do not like?

 

Your two windows to act

The Annual Enrollment Period runs October 15 to December 7: switch Medicare Advantage plans, change drug plans, or move between Original Medicare and Medicare Advantage, all effective January 1. Advantage members who miss it get one more chance: the Medicare Advantage Open Enrollment Period, January 1 to March 31, allows a single switch.

 

Two cautions before you jump

Do not switch on premium alone; run your doctors, hospital, and full drug list against any new plan first, because a cheaper premium with a broken network is a raise, not a savings. And do not assume the plan that fit you at 65 still fits at 72. Plans drift year over year, and so do prescriptions. The ANOC is exactly the annual nudge to check.

 

If no ANOC has arrived by early October: call your plan's member services number and request it, and check your plan's online portal, where it is usually posted. Missing paperwork is not a free pass on the January changes.

 

Want a yearly system instead of a yearly scramble? our local Kentucky team runs a simple four-point fall review built around the ANOC, described in their yearly Medicare plan review guide (https://bluegrassmedicarehelp.com/articles/annual-medicare-review-aep/). The checklist works the same in every state.

 

Quick recap

• The ANOC must reach you by September 30 and lists every change your Medicare Advantage or Part D plan makes on January 1.
• Audit six things: premium and MOOP, your drugs and tiers, pharmacy status, provider network, the copays you actually use, and the extras you count on.
• The Annual Enrollment Period (October 15 to December 7) is your window to change plans; Advantage members get one more switch January 1 to March 31.
• A non-renewal notice is different: the plan is ending, and it comes with special enrollment rights and deadlines, so act promptly.
• Never switch on premium alone; verify doctors, hospital, and prescriptions against any new plan first.

Frequently asked questions

 

What is the ANOC letter from my Medicare plan?

The Annual Notice of Change is a document Medicare Advantage and Part D plans must send each fall, arriving by September 30. It compares your current year's benefits with next year's, showing changes to premiums, deductibles, copays, the drug formulary, pharmacy and provider networks, and extra benefits, all effective January 1.

 

When should I receive my ANOC, and what if it never comes?

Plans must ensure it arrives by September 30. If you have not received one by early October, call your plan's member services number and request it, and check your plan's online portal, where it is usually posted. Keep it with your records in case a January bill conflicts with what it promised.

 

What should I look for first in the ANOC?

Start with the maximum out-of-pocket and your own medications. The MOOP change defines your worst-case year, and formulary tier changes or new prior authorization rules on drugs you already take are where most people lose money without noticing. Then confirm your doctors, hospital, and pharmacy are still in-network.

 

What can I do if my plan is changing in ways I do not like?

Use the Annual Enrollment Period, October 15 to December 7, to switch Medicare Advantage plans, change drug plans, or move between Original Medicare and Medicare Advantage, effective January 1. If you are in an Advantage plan and miss the fall window, the January 1 to March 31 Medicare Advantage Open Enrollment Period allows one switch.

 

Is the ANOC the same as a non-renewal notice?

No. The ANOC describes changes to a plan that will continue next year. A non-renewal notice says your plan is ending entirely, which triggers a Special Enrollment Period and, in many cases, guaranteed-issue rights to buy certain Medigap policies. If you receive a non-renewal notice, act on it promptly rather than waiting.

 

Written by Austin Tyler, a licensed insurance agent with Tyler Insurance Group.