New Mexico Medicare · Enrollment

Your 2027 Medicare ANOC Letter: A New Mexico Checklist

Every fall your Medicare plan mails a thin envelope that most people set aside. It is the one document that tells you, in advance, exactly what your coverage will cost and cover next year. Here is when the 2027 Annual Notice of Change arrives, the seven lines worth checking, and the deadlines that follow it.

By the New Mexico Medicare Help Data Desk

Reviewed by Brian Penner, Independent Medicare advisor — no pressure · Updated August 24, 2026

Your 2027 Medicare Annual Notice of Change arrives in September 2026 — plans must have it to you by September 30, 2026 — and it lists every change your plan is making for January 1, 2027. Read seven things in it: the monthly premium, the deductible, the maximum you can be asked to pay out of pocket, your prescriptions and the tiers they sit on, the pharmacies you can use, the doctors and hospitals in network, and the extra benefits you actually use. Then compare, if anything moved, during the Annual Enrollment Period from October 15 to December 7. This fall matters more than most in New Mexico: Presbyterian is discontinuing most of its Medicare Advantage plans for 2027, reported to affect roughly 30,000 members, and CMS is ending the program that has been holding stand-alone drug plan premiums steady. The letter is thin. Twenty minutes with it now is worth more than any amount of guessing in January.

What the ANOC is, and when it comes

The Plan Annual Notice of Change is a required mailing. If you are enrolled in a Medicare Advantage plan, a Medicare Advantage plan with drug coverage, or a stand-alone Part D drug plan, your plan must send you one every fall, and Medicare.gov tells beneficiaries to expect it in September. The deadline plans work to is the end of September — September 30, 2026 for the 2027 plan year — so that everyone has the document in hand before the Annual Enrollment Period opens on October 15.

What makes the ANOC useful is what it leaves out. It is not the contract. It is a change log: a side-by-side of what you have in 2026 and what you will have in 2027, usually in two columns, usually under twenty pages. If a line is identical in both columns, nothing changed and you can move on. If the columns differ, that is where your attention belongs.

Two practical notes. First, the ANOC goes to the address your plan has on file — if you spend part of the year away from home, or moved recently, call your plan now rather than in November. Second, Medicare's own guidance if the letter never arrives is direct: contact your plan and ask for it. You are entitled to it, and plans post it online as well.

Sources: Medicare.gov — Plan Annual Notice of Change (ANOC); Medicare.gov — Open Enrollment (October 15–December 7).

Three fall letters, three very different meanings

Three envelopes tend to land within a few weeks of each other, and they are not interchangeable. Confusing them is the single most common reason people miss a deadline.

Sources: Medicare.gov — Plan Annual Notice of Change; Medicare.gov — Change in plan availability notice; Medicare & You 2026 handbook (PDF).

If you received a non-renewal notice rather than an ordinary ANOC, start with our guide to what happens if your plan ends and you do nothing, then come back here for the comparison steps.

The seven lines to check in your 2027 ANOC

Work through these in order. The first three are money, the middle two are access to your medications, and the last two are the ones people discover too late.

1. The monthly plan premium. Is the 2027 column higher than 2026? Remember that this is on top of your Part B premium, which was $202.90 a month for most people in 2026 and is set separately by CMS each fall. A plan advertised at a zero-dollar premium is not a free plan — you still pay Part B, and you still face the plan's copays and coinsurance.
2. The deductibles. Both the medical deductible, if the plan has one, and the Part D drug deductible. Federal law capped the Part D deductible at $615 for 2026; plans can charge less, and many change the amount from year to year. Your ANOC states your plan's own 2027 figure.
3. The maximum out-of-pocket. Every Medicare Advantage plan has an annual in-network limit on what you can be asked to pay for covered medical services. It is the number that matters most in a bad year, and in the CMS landscape data for New Mexico it varies widely from plan to plan. Original Medicare, by contrast, has no such limit — which is why this line deserves more weight than a small premium difference.
4. Your prescriptions and their tiers. Take your actual medication list, not a memory of it, and find each drug in the 2027 formulary. Watch for three moves: a drug dropped from the list entirely, a drug shifted to a higher tier, and a new prior-authorization or step-therapy requirement. In 2026 the Part D annual out-of-pocket threshold was $2,100, after which covered drugs cost you nothing for the rest of the year; the tier your drug sits on determines how fast you get there.
5. Your pharmacy. Preferred, standard and out-of-network pharmacies can carry very different copays for the identical prescription, and plans rearrange these networks every year. If you use a small-town or tribal pharmacy, confirm its 2027 status specifically rather than assuming a chain-based network covers it.
6. Your doctors and hospitals. The ANOC will tell you if the provider network is changing, but it will not list every provider. Call the offices you actually use — primary care, any specialist you see regularly, your preferred hospital — and ask whether they will be in the plan's 2027 network. Get it from the provider, not only from the directory.
7. The extra benefits you actually use. Dental, vision, hearing, fitness, over-the-counter allowances and transportation are supplemental benefits, and their dollar amounts, vendors and rules change frequently. For 2027 CMS also finalized clearer requirements for the debit cards some plans use to administer these benefits. Check the allowance and the network, not the headline.

Sources: CMS — 2026 Medicare Parts A & B premiums and deductibles ($202.90; $283); CMS — Final CY2026 Part D Redesign Program Instructions ($2,100 out-of-pocket threshold; $615 maximum deductible); CMS — Contract Year 2027 MA and Part D final rule (supplemental-benefit debit cards); CMS CY2026 MA / Part D Landscape file.

What is already known about 2027

Your ANOC is plan-specific, but it lands inside a program that is also changing. Four items CMS has already put on the record are worth knowing before you read the letter, because they explain why some numbers moved.

Sources: CMS — Medicare Part D 2027 National Average Monthly Bid Amount Information, July 28, 2026; CMS — Contract Year 2027 Final Part D Bidding Instructions (PDF).

Two more, from the Contract Year 2027 final rule CMS issued on April 2, 2026. First, the Star Ratings that appear next to each plan on Medicare.gov are being refocused for 2027: CMS is trimming measures that reflected administrative process, adding a Part C depression screening and follow-up measure, and keeping the diabetes eye-exam measure — meaningful in a state where diabetes is common. Second, the rule codifies the Inflation Reduction Act's Part D redesign, including the elimination of the coverage gap phase and no cost sharing in the catastrophic phase. Treat star ratings as one input among several, not a verdict; a four-star plan that drops your cardiologist is still the wrong plan for you.

A caution on the numbers CMS has not published yet. The 2027 Part B premium and deductible are normally announced in the late fall, and the full 2027 plan landscape is released in mid-to-late September, once plan offerings are final. Until then, any 2027 premium comparison you see is either your own plan's ANOC or an estimate. For 2027 Part D non-defined-standard designs, CMS is reviewing plans against copay thresholds of $20 on the generic tier, $47 on preferred brand, and $100 on non-preferred drugs; those are review benchmarks for CMS, not a promise about what your plan will charge.

Sources: CMS — Medicare beneficiaries to see simpler plan choices in 2027, April 2, 2026; CMS — Contract Year 2027 MA and Part D final rule fact sheet; CMS — CY2027 Final Part D Bidding Instructions (specialty tier $1,080; medication therapy management cost threshold $1,340); Medicare.gov — Star ratings.

How many plans does your New Mexico county actually have?

"Shop around" is easy advice to give and harder to follow in a state this rural. The CMS landscape file — the same data behind Medicare's Plan Compare — shows how uneven the shelf is. Here are the Medicare Advantage plans with drug coverage available for 2026 in five New Mexico counties:

Source: CMS CY2026 Medicare Advantage / Part D Landscape file, March 2026 release — count of MA-PD plan offerings per county, excluding stand-alone drug plans and Cost plans. Retrieved via our data desk on August 24, 2026. The 2027 landscape is published by CMS in mid-to-late September and these counts will change.

Albuquerque and Rio Rancho residents had 29 and 29 choices respectively for 2026. Farmington and the rest of San Juan County had 8. That gap is the practical reason a plan exit hits harder in the Four Corners than in the metro: fewer replacements, and a higher chance the one you would have picked is not sold where you live. Across the state, 474,944 New Mexicans were on Medicare as of April 2026, so even a single carrier's decision moves a lot of households.

Source: CMS — Medicare Monthly Enrollment, April 2026 (474,944 New Mexico beneficiaries).

If the letter says your plan is ending

A non-renewal notice is a different document from an ANOC, and it comes with different rights. Three windows open, and they do not close at the same time.

• The Annual Enrollment Period, October 15 to December 7. The cleanest option. Pick a new Medicare Advantage or Part D plan and coverage starts January 1, 2027 with no gap.
• A Special Enrollment Period, December 8, 2026 through the last day of February 2027. Medicare gives people whose plan contract is not renewed extra time to join another plan. Useful as a safety net, but a January or February enrollment can mean a short stretch on Original Medicare first.
• A Medigap guaranteed-issue right. Losing Medicare Advantage coverage because the plan left your area can give you the right to buy certain Medicare Supplement policies without answering health questions. The window is generally 63 days around the end of your coverage — the shortest of the three, and the one people most often let lapse. Our New Mexico guaranteed-issue guide covers which plan letters you can buy and what proof to keep.

If you have both Medicare and Medicaid, your options and your timing are different again — dual-eligible special needs plans have their own enrollment rules, explained in our D-SNP guide for 2027.

Sources: Medicare.gov — Special Enrollment Periods (plan contract not renewed: December 8, 2026 through the last day of February 2027); Medicare.gov — Joining a plan; Medicare.gov — When you can buy Medigap with guaranteed issue; Choosing a Medigap Policy 2026 (PDF); New Mexico Political Report — Presbyterian to stop covering about 30,000 Medicare members; Albuquerque Journal — Presbyterian to drop most Medicare Advantage plans.

Your fall calendar, date by date