The Annual Notice of Change is the one piece of Medicare mail that actually deserves your attention. Every fall, your Medicare Advantage or Part D plan must tell you exactly what changes January 1 — premium, deductible, drug list, network, extras. It arrives by September 30, most people never open it, and the ones who do save themselves the January surprises. Here's how to read yours in ten minutes.
Plans change every calendar year — that's the deal with Medicare Advantage and Part D. The ANOC is the required disclosure of those changes: a side-by-side of this year's costs and benefits versus next year's, mailed so it reaches you by September 30. It exists because your plan renews automatically on January 1 — do nothing and you're enrolled in next year's version, whatever it now costs and covers. The ANOC is your one clean look at 'next year's version' while you can still act on it: the Annual Enrollment Period, October 15 to December 7, is when you can switch plans for January 1.
(If you have Original Medicare with a Medigap supplement, you won't get an ANOC for the Medigap policy — its benefits are standardized and don't change, only the premium does. Your Part D drug plan, though, sends one every year.)
Skip the cover letter, find the comparison chart, and check five things:
If all five look fine: congratulations, do nothing, your plan renews. That's a legitimate outcome — the point of reading is choosing to stay, not switching for its own sake.
The ANOC lands in September; the Annual Enrollment Period opens October 15. That gap is your homework window:
Three things that help every fall:
Want a second set of eyes on yours this fall? Reading ANOCs against county plan lineups is genuinely part of the job, and the help is free: (561) 660-9102.
Required disclosures: Smooth Health Solutions is not connected with or endorsed by the United States government or the federal Medicare program. We do not offer every plan available in your area. Currently we represent 0–78 organizations which offer 0–2,613 products in your area. The exact number of organizations and products depends on your ZIP code, county, and plan year. Please contact Medicare.gov, 1‑800‑MEDICARE, or your local State Health Insurance Assistance Program (SHIP) to get information on all of your options. This article is educational — it explains how to read your ANOC, not any specific plan.
Plans must get it to you by September 30 each year — most mail it in September. If yours hasn't arrived by the end of September, call your plan and request it; you want it in hand before the Annual Enrollment Period opens October 15.
Not for the Medigap policy — Medigap benefits are standardized and don't change year to year (your premium can change, which the carrier notifies you about separately). Your stand-alone Part D drug plan does send an ANOC every fall, and it deserves the same five-check read.
Your plan renews automatically January 1 in its new form — new premium, new drug tiers, new network, whatever the ANOC described. Nothing lapses; you're covered. The risk isn't losing coverage, it's discovering the changes at the pharmacy counter in January instead of the mailbox in September.
Three, roughly: switch to a plan that tiers it better during the October 15 – December 7 window, ask your doctor whether a covered alternative makes clinical sense, or file a formulary exception request with the plan. Comparing plans around your actual drug list is exactly what Plan Finder, SHIP counselors, and licensed agents are for.
You generally act during the Annual Enrollment Period, October 15 – December 7, for a January 1 effective date. The ANOC arriving in September gives you a few weeks to compare before the window opens — use them for homework, then enroll once the window is live.
No — they travel together but do different jobs. The ANOC summarizes what changes next year; the Evidence of Coverage (EOC) is the complete rulebook for next year's plan. Start with the ANOC; open the EOC when a flagged change needs the full detail.
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Important: This article is general information, not insurance, legal, tax, or medical advice. Coverage details vary by plan, carrier, state, and county, and change over time — always confirm benefits with the specific plan documents or a licensed agent before making decisions. Smooth Health Solutions is not connected with or endorsed by the U.S. government, the federal Medicare program, CMS, HealthCare.gov, or any state marketplace or government agency.