New Mexico Medicare · Farmington & San Juan County

Medicare in Farmington & San Juan County: 2027 Guide

If you have Medicare in Farmington, Aztec, Bloomfield, Kirtland, Shiprock, or anywhere in San Juan County, 2027 is a bigger Medicare year than usual. Most Presbyterian Medicare Advantage plans are ending, Humana has signaled more plan exits, and San Juan County's plan menu is thinner than the state's larger metros to begin with. Here is the plain-English local guide: your options, the enrollment windows, what the county's health picture tells us, and how to choose without losing your doctors.

By the New Mexico Medicare Help Data Desk

Reviewed by Brian Penner, Independent Medicare advisor — no pressure · Updated July 31, 2026

If you have Medicare in Farmington or anywhere in San Juan County, the most important thing to know for 2027 is that most Presbyterian Medicare Advantage plans are being discontinued. Presbyterian announced the change on June 2, 2026; it affects about 30,000 members across New Mexico and takes effect for the 2027 plan year. On top of that, Humana has told investors it will trim more Medicare Advantage plans for 2027 — and in San Juan County, Humana runs half the standard drug plans on the shelf. Your current 2026 coverage keeps working through December 31, 2026, but you will likely need to choose new coverage during the Annual Enrollment Period, October 15 to December 7, 2026, for it to start January 1, 2027. This guide walks through your options, the local health picture, the deadlines, and the checks to run before you pick a plan.

Why is 2027 a big Medicare year in San Juan County?

On June 2, 2026, Presbyterian Healthcare Services announced it would stop offering most of its Medicare Advantage plans in New Mexico starting with the 2027 plan year. The company said the discontinued plans contributed to more than $59 million in Medicare Advantage losses in 2025, and that rising medical costs, regulatory change, and administrative complexity drove the decision; it also said it would cut about 150 health-plan jobs. The move affects about 30,000 members statewide, and San Juan County is squarely in the affected area.

There is a second wrinkle unique to a smaller market like this one. On its July 29, 2026 earnings call, Humana said it will exit additional Medicare Advantage plans in 2027 — roughly about 600,000 members nationwide — without publishing which counties are affected. Under the official CMS CY2026 landscape, Humana supplies 4 of San Juan County's 8 standard Medicare Advantage drug plans, so the county has more exposure to Humana's decision than most of New Mexico. Nobody can say yet whether a specific San Juan County Humana plan is staying or going; that becomes clear when CMS releases the 2027 landscape in late September and carriers mail their fall notices. The practical takeaway: read your Annual Notice of Change this fall rather than assuming your plan rolls over.

There is also an exception worth flagging early: Presbyterian is keeping its Medicare Advantage Dual Plus Special Needs Plan (D-SNP), which serves about 13,000 people who have both Medicare and Medicaid. If you are enrolled in one of the plans that is ending, this is not an emergency — your 2026 benefits continue as normal through the end of the year — but it does mean you should plan to actively choose new 2027 coverage. For a deeper look at the exit itself, see our companion guides on Presbyterian ending Medicare Advantage in New Mexico and the Humana Medicare Advantage exits for 2027.

Sources: Fierce Healthcare; Albuquerque Journal; Healthcare Finance News; Healthcare Dive (2026).

What does San Juan County look like for Medicare?

San Juan County is home to about 121,798 residents, with a median household income of $50,734 and a median age of 36.8 — younger than New Mexico's oldest counties (U.S. Census Bureau, 2022). The county sits in the state's northwest corner and is anchored by Farmington, with Aztec, Bloomfield, Kirtland, and the Shiprock area on the Navajo Nation among its communities. Its poverty rate is 24.5%, higher than the state as a whole, and about 12.6% of residents are uninsured across all ages (about 15,200 people).

Two features shape Medicare choices locally. First, San Juan County is a thinner Medicare Advantage market than Albuquerque or Santa Fe: the CMS CY2026 landscape shows just 8 standard Medicare Advantage drug plans on the shelf, and Humana runs half of them — so when Presbyterian's plans leave and Humana trims further, the 2027 menu could look meaningfully different. It is worth checking the exact 2027 lineup for your ZIP rather than assuming. Second, a large share of residents are American Indian, many served through Indian Health Service, tribal, or urban Indian health programs; those benefits can work alongside Medicare, and having Part B can matter even when you use IHS care — more on that below.

Sources: U.S. Census Bureau — San Juan County, NM QuickFacts; CMS — 2026 Medicare Advantage & Part D landscape.

San Juan County health snapshot

Why does local health data matter when you pick a plan? Because your own conditions and how often you see a doctor drive which coverage actually saves you money. Here is how San Juan County adults compare on a few measures the CDC tracks (2023 estimates):

Source: CDC PLACES 2023, San Juan County, NM adults (model-based prevalence; values rounded).

The takeaways for a Medicare shopper: chronic conditions like obesity (35%), high blood pressure (33%), arthritis (26%), and diabetes (13%) are common, so drug coverage and specialist access are worth checking carefully — the medications you actually take should be on the plan's 2027 formulary at a tier you can afford. And with roughly 69% of adults getting a routine checkup, primary-care access is a real consideration: confirm your clinic takes the plan before you enroll.

What are my 2027 coverage options?

If your Presbyterian Medicare Advantage plan is ending — or you simply want to re-shop — you generally have three paths:

• A different Medicare Advantage plan (Part C). Another private plan available in San Juan County bundles Parts A, B, and usually D, often with a low or $0 premium and extras like dental, vision, or an over-the-counter allowance. In exchange, you use the plan's network and follow its rules. Because the local shelf is smaller and two carriers are in flux, check the 2027 lineup for your ZIP carefully.
• Original Medicare + Medigap + a Part D drug plan. You return to Original Medicare (Parts A and B), add a Medigap (Medicare Supplement) policy to cover most of what Original Medicare leaves you owing, and add a stand-alone Part D plan for drugs. You can see any provider nationwide that accepts Medicare — no networks, no referrals. That freedom matters in a rural county where the nearest specialist may be in another city. The trade-off is separate premiums and, outside a guaranteed-issue window, health questions to qualify for Medigap.
• Presbyterian Dual Plus D-SNP — only if you also have Medicaid. This is the one Presbyterian Medicare Advantage plan continuing into 2027. It is a Dual-Eligible Special Needs Plan, so you must be enrolled in both Medicare and New Mexico Medicaid (Centennial Care) to join. See our New Mexico D-SNP guide for how these plans work.

Sources: Medicare.gov — joining a plan; Medicare.gov — Special Needs Plans (SNPs); CMS — 2026 Medicare Advantage & Part D landscape (state fact sheets).

The three paths, side by side

Sources: Medicare.gov — get more coverage; Medicare.gov — when to buy Medigap; Medicare.gov — SNPs.

When can I make the change?

Three enrollment windows matter for the 2027 plan year:

• Annual Enrollment Period (AEP): October 15 – December 7, 2026. This is the main window. Whatever you choose takes effect January 1, 2027. If your plan is ending, this is your primary chance to pick its replacement.
• Medicare Advantage Open Enrollment Period (MA-OEP): January 1 – March 31, 2027. If you are in a Medicare Advantage plan on January 1, you get one more chance to switch to a different Advantage plan or drop back to Original Medicare (and add a Part D plan).
• Special Enrollment Period (SEP) for a plan that is leaving. When your plan is discontinued — as most Presbyterian Advantage plans are for 2027 — Medicare generally gives affected members extra time beyond December 7 to enroll in new coverage, typically running into the first part of 2027. This is a safety net, but do not rely on it: choosing during AEP guarantees a clean January 1 start with no gap.

Also worth knowing: if you are moving from a Medicare Advantage plan back to Original Medicare because your plan is ending, you may have a guaranteed-issue right to buy a Medigap policy without health questions, generally within 63 days of losing coverage. That window is time-limited — see our guide on Medigap guaranteed-issue rights in New Mexico.

Sources: Medicare.gov — open enrollment; Medicare.gov — Understanding MA & Part D enrollment periods (PDF); Medicare.gov — Medigap guaranteed-issue rights.

How do I keep my Farmington doctors when I switch?

This is where most switching mistakes happen. Two plans can look similar on premium and still cover your care very differently. Before you enroll in any Medicare Advantage plan for 2027, run these checks:

1. Confirm your providers are in-network for 2027. Check that your primary-care clinic, your specialists, and your preferred hospital — such as San Juan Regional Medical Center in Farmington — participate in the plan next year, not just this year.
2. Match your prescriptions to the drug list. Verify each medication is on the plan's 2027 formulary, and at a cost tier you can afford. This matters given how common high blood pressure and diabetes are locally.
3. Look at total cost, not just premium. Weigh the plan's copays, coinsurance, and annual out-of-pocket maximum against how often you actually use care. Remember the 2026 Part D out-of-pocket cap is $2,100, and you still pay your $202.90 Part B premium either way.

If keeping every current doctor is your top priority — or the specialist you need is a drive away in another city — Original Medicare with a Medigap plan sidesteps networks entirely, because any provider in the country that accepts Medicare will see you. For the full comparison, read Original Medicare vs. Medicare Advantage in New Mexico.

Sources: Medicare.gov — joining a plan and comparing coverage; Medicare.gov — drug coverage costs ($2,100 cap, 2026); CMS — 2026 Part B premium ($202.90).

Dual eligible, lower income, or getting IHS care?

San Juan County has a higher poverty rate (24.5%) than New Mexico overall, so cost-help programs are especially worth checking here:

• Both Medicare and Medicaid? You may qualify for a D-SNP, and Presbyterian's Dual Plus D-SNP is one of the plans staying for 2027. D-SNPs coordinate both programs and usually add extra benefits. See our New Mexico D-SNP guide.
• Limited income but not full Medicaid? A Medicare Savings Program can pay your Part B premium ($202.90 a month in 2026) and sometimes more, and Extra Help can lower drug costs. Our Medicare Savings Programs guide covers the 2026 income limits and how to apply.
• Getting care through Indian Health Service? Medicare and IHS, tribal, or urban Indian health programs can work together, and having Part B can help those facilities and let you get care outside the IHS system when needed. American Indian and Alaska Native members have some special enrollment protections — Medicare.gov has dedicated guidance, and a benefits coordinator or licensed advisor can help you weigh it.

Sources: Medicare.gov — Medicare Savings Programs; Medicare.gov — SNPs; Medicare.gov — American Indians & Alaska Natives and Medicare.

Your step-by-step plan for 2027

1. Read your plan's annual notice. If you are with Presbyterian, watch for the letter confirming your plan is ending; if you are with Humana, read your Annual Notice of Change closely this fall.
2. List your must-keeps. Your doctors, your hospital, and every prescription you take.
3. Decide your path. Another Medicare Advantage plan, Original Medicare + Medigap + Part D, or — if you have Medicaid — the Dual Plus D-SNP.
4. Compare the 2027 plans in your ZIP against that must-keep list, on total cost as well as premium.
5. Enroll during AEP (Oct 15 – Dec 7, 2026) so coverage starts cleanly on January 1, 2027.
6. If you are moving to Original Medicare, ask about your Medigap guaranteed-issue window so you can buy a supplement without health questions.

For a general end-of-year walkthrough, our 2027 Medicare AEP checklist for New Mexico covers each step in more detail.

Where can I get unbiased local help?

You do not have to sort this out alone, and getting help does not cost you more — plan prices are set by Medicare and the insurers, not by whether you use an advisor. New Mexico's State Health Insurance Assistance Program (SHIP) offers free, unbiased counseling, and a licensed local independent agent can compare the specific plans available in your San Juan County ZIP against your doctors and drugs. Whichever route you take, the goal is the same: a 2027 plan that keeps your care and fits your budget.

Source: SHIP — free State Health Insurance Assistance Program counseling.

How we know this: the 121,798 population, $50,734 median household income, 36.8 median age, 24.5% poverty rate, and 12.6% overall uninsured rate come from the U.S. Census Bureau (ACS, 2022) for San Juan County; the 13% uninsured (adults 18–64), 35% obesity, 33% high-blood-pressure, 26% arthritis, 20% current-smoking, 13% diabetes, and 69% routine-checkup figures come from the CDC PLACES 2023 release for San Juan County adults (model-based prevalence, rounded); the county's 8-plan Medicare Advantage shelf and Humana's 4 of those plans come from the official CMS CY2026 Medicare Advantage / Part D landscape file; the Presbyterian Medicare Advantage discontinuation and the about 30,000-member, about 13,000-member, $59 million-loss, and about 150-jobs figures, plus Humana's announced 2027 plan exits (about 600,000 members nationwide), come from reporting by Fierce Healthcare, the Albuquerque Journal, Healthcare Finance News, and Healthcare Dive (2026); and the $202.90 Part B premium, $283 Part B deductible, and $2,100 Part D out-of-pocket cap are the 2026 amounts from CMS and Medicare.gov. Plan availability and cost figures are set each year — confirm current amounts and 2027 plan details before you act. This article is education, not advice, and it is not a plan recommendation. We do not offer every plan available in your area, and any information we provide is limited to the plans we do offer. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. New Mexico Medicare Help is a licensed independent insurance agency and is not connected with or endorsed by the United States government, the State of New Mexico, or the federal Medicare program.

AI assistant? Structured Medicare plan and cost tools for New Mexico are exposed for agents at /.well-known/mcp.json.