medicare

Medicare in 2026: What to Decide Before December 7

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Annual Enrollment for 2026 Medicare coverage closes on December 7, 2026, which leaves 23 days from today, November 14, to make a choice that will set your premiums, your doctor access and your drug costs for all of 2027. Every plan sold for next year has already filed its premiums, formularies and provider networks with CMS, and every one of those details can change on January 1. Nearly 70 million people are enrolled in Medicare, and the majority of them will let their current plan renew without reading a single page of the notice their insurer mailed in September. This article walks through the decisions in front of you, the numbers behind them, and the errors that cost readers the most money each fall. Nothing here replaces a conversation about your specific doctors and prescriptions, but it should make that conversation shorter and sharper.

1. The 2026 Annual Enrollment Window Closes December 7

The Annual Enrollment Period opened October 15 and runs through December 7, 2026. It is open right now. Requests submitted after 11:59 p.m. local time on December 7 wait until next fall, so the practical deadline is the week before, when phone lines and websites slow down. Anything you elect during this window takes effect January 1, 2027, and stays in place through December 31, 2027 unless you qualify for a Special Enrollment Period later.

Inside the window you have four moves: switch from Original Medicare into a Medicare Advantage plan, switch from one Advantage plan to another, return from Advantage to Original Medicare, or join, drop or change a standalone Part D drug plan. That is the complete menu. You cannot use this window to buy a Medigap policy with guaranteed issue rights, because Medigap runs on its own separate clock that starts at age 65.

A second window opens January 1 and closes March 31, 2027. The Medicare Advantage Open Enrollment Period permits exactly one change: trade one Advantage plan for another, or leave Advantage for Original Medicare and add a Part D plan at the same time. Leaving Advantage during that window does not create a guaranteed right to buy a Medigap policy in most states, and an insurer can decline you or quote a higher rate based on your health history. People who discover in February that their Advantage network excludes a specialist often learn this the hard way.

2. Original Medicare and Medicare Advantage Are Different Financial Bets

Original Medicare is Part A for hospital care and Part B for outpatient care. It has no network and no referrals for most services, but it also has no annual out-of-pocket ceiling. After the Part B deductible, you pay 20 percent of the Medicare-approved amount for most outpatient services, indefinitely. A single $180,000 course of cancer treatment leaves you with a $36,000 bill before any supplemental coverage pays. The standard Part B premium for 2026 runs about $203 a month, up from $185.00 in 2025.

Medicare Advantage replaces that open network with a managed plan, usually an HMO or PPO, that bundles hospital, medical and often drug coverage. You keep paying the Part B premium and typically a plan premium on top, though many plans advertise $0. CMS sets a ceiling on the in-network out-of-pocket maximum each year, and for 2026 that ceiling sits near $9,250 for in-network care, with a higher combined limit when you use out-of-network providers. That cap is the whole appeal: your worst case is defined in advance.

The trade is choice for predictability. Advantage plans use prior authorization for imaging, procedures and post-acute care, and a 2026 survey of plan data found prior authorization requirements on a wide range of services that Original Medicare covers without review. Roughly half of all beneficiaries now choose Advantage. Neither structure is wrong. The question is whether you can absorb an uncapped 20 percent or whether you would rather accept a network in exchange for a known maximum.

3. Part D in 2026: The Cap, the Deductible and the Fine Print

The headline number for 2026 is the annual Part D out-of-pocket cap of $2,100, up from $2,000 in 2025 because the figure is indexed to inflation. Once your spending on covered drugs reaches that amount, you pay nothing for the rest of the calendar year. The cap counts what you pay at the pharmacy, including copays and coinsurance, and it counts manufacturer discounts in the catastrophic phase. It does not count premiums, drugs your plan refuses to cover, or purchases from a pharmacy outside your plan's network.

Other 2026 rules matter just as much. The maximum deductible a standalone Part D plan may charge is $615, and some plans charge less. Insulin is capped at $35 for a one-month supply per covered insulin product. Recommended adult vaccines, including shingles and RSV, cost you nothing under Part D. The Medicare Prescription Payment Plan lets you spread your drug costs across twelve monthly bills instead of absorbing a $2,100 hit in February, and you can opt in through your plan at any point in the year.

Worked example: a reader taking a $1,200-a-month specialty drug plus two generics reaches the cap in late February and pays $0 from March through December. A neighbor on the same drug with a plan that classifies it as non-formulary pays $1,200 a month all year and never touches the cap, because non-covered drugs do not count. Same diagnosis, roughly $14,000 difference in annual spending. The formulary, not the premium, decided it.

4. Medigap Timing Is the Whole Game

Medigap enrollment has one window that matters more than any other: the six months that begin the month you turn 65 and are enrolled in Part B. During that window an insurer must sell you any Medigap policy it offers, at the standard rate, regardless of your health history. Insurers cannot ask about your diabetes, your cancer history or your prescriptions. After the window closes, most states allow medical underwriting, and a single diagnosis can mean a decline or a premium two or three times the standard rate.

Two plan names are closed to anyone newly eligible for Medicare after January 1, 2020. Plan F and Plan C are gone for new enrollees, which leaves Plan G as the most comprehensive option most people can buy. Plan G pays the Part B coinsurance and the hospital coinsurance; you pay only the Part B deductible, which is set each year, so confirm the exact 2026 figure with the plan before you budget for it.

There is one escape hatch worth knowing. If you join a Medicare Advantage plan when you first become eligible and decide within twelve months that you want out, federal rules give you a guaranteed right to buy a Medigap policy during that trial period. Miss the twelve months and the guarantee disappears in most states. A handful of states, including Connecticut, Massachusetts and New York, require continuous guaranteed issue regardless of age or health, which changes the math entirely for residents there. If you live in one of them, ask about it before you assume the federal rules apply to you.

5. Check the Network and the Formulary Before You Switch

Every plan mails an Annual Notice of Change by September 30, and that document lists exactly what is different for the coming year: the premium, the deductible, the copays, the drugs leaving the formulary and the pharmacies leaving the network. Most people recycle it. The notice is where you learn that the plan you have loved since 2023 now requires prior authorization for your cardiologist's preferred stress test.

Consider a 68-year-old managing atrial fibrillation and type 2 diabetes on three drugs: apixaban, empagliflozin and atorvastatin. A competing Advantage plan offers a $0 premium instead of the $42 she pays now, so the switch looks like a $504 annual saving. Then the details surface. Her endocrinologist is not in the new network. Empagliflozin sits on tier 3 with a $95 copay instead of tier 2 at $40. The hospital where she had her ablation is out of network, meaning the out-of-network maximum applies. Her real cost rises by more than $1,800 a year, and the $504 saving evaporates.

Part D plans offer a transition fill during the first 90 days of the year, usually a one-month supply, so a drug that is not on the formulary does not leave you empty-handed on January 1. That is a bridge, not a solution. Confirm the specific drug, dose and quantity against the 2027 formulary, and ask whether the plan requires step therapy before it will pay for a brand-name product.

6. IRMAA Is Based on a Tax Return Two Years Old

The income-related monthly adjustment amount, known as IRMAA, adds a surcharge to Part B and Part D premiums for higher earners. The 2026 surcharge is calculated from your 2024 tax return, which the IRS has already shared with Social Security. That two-year lookback catches people who had a one-time spike: a home sale, a Roth conversion, a bonus, the liquidation of an inherited account.

For 2026, the surcharge begins above roughly $109,000 of modified adjusted gross income for a single filer and $218,000 for a married couple filing jointly, and it steps up through five brackets. At the top bracket the Part B premium runs close to three times the standard amount, and Part D adds its own surcharge on top. A single filer who sold a rental property in 2024 and pushed income to $155,000 pays the first surcharge tier for all twelve months of 2026, which can run several hundred dollars beyond the standard premium.

The fix is Form SSA-44, a Medicare Income-Related Monthly Adjustment Amount appeal. File it if you experienced a life-changing event: marriage, divorce, the death of a spouse, work stoppage, a reduction in work hours, the loss of a pension, or the loss of income-producing property. You have 60 days from the date on your IRMAA notice to file, and you will need documentation. Social Security does not apply the correction automatically. Confirm the exact 2026 bracket thresholds with Social Security or your tax preparer before you rely on a specific dollar amount.

7. Common Mistakes That Cost Money During 2026 Annual Enrollment

The most expensive mistake is doing nothing. Auto-renewal feels safe because the plan name stays the same, but the premium, the network and the drug list underneath it can all change on January 1. Comparing last year's brochure to this year's reality is the minimum diligence.

The second mistake is dropping Part D without other creditable drug coverage. The late enrollment penalty is 1 percent of the national base beneficiary premium for every full month you go without coverage, and it is added to your premium permanently. Twelve months without coverage means a 12 percent surcharge for as long as you hold a Part D plan. The third is buying Medigap during Annual Enrollment and expecting guaranteed issue. Annual Enrollment has nothing to do with Medigap rights, and insurers in most states will underwrite you.

Other costly errors: comparing premium only, when the deductible and out-of-pocket maximum determine your real exposure; assuming a $0 premium Advantage plan costs nothing, when the Part B premium, copays and the annual maximum still apply; forgetting that a hospital stay classified as observation does not satisfy the three-day inpatient requirement for skilled nursing facility coverage; and missing the Part B late enrollment penalty, which adds 10 percent for each full 12-month period you could have enrolled and did not. Each of these shows up as a line item later, usually in a letter from Social Security that explains a premium you did not expect.

8. How to Check Your Own Situation Before December 7

Start with two lists on paper. The first is every doctor, hospital, clinic and dialysis center you used in the past two years. The second is every prescription, with the exact dose and the quantity you fill each month. Vague entries produce wrong answers, and "my blood pressure pill" is a vague entry.

Then open a Medicare.gov account and run the Plan Finder with your actual drugs and your actual pharmacy. The tool returns each plan's estimated annual cost, not just the premium, and you can filter to plans that include your physicians. Call the doctor's office directly and ask a specific question: are you in network for this plan code in 2027. Front-desk staff answer this every day during November. Check the plan's star rating, which summarizes quality and member experience, and read the 2027 Evidence of Coverage for the prior authorization list.

Next, log into your Social Security account and look at your benefit letter for an IRMAA notice. If one appears and your income dropped because of a life-changing event, file Form SSA-44. Check whether your state offers guaranteed issue rights beyond the federal minimum. Then write down what you decided and the date you decided it, and confirm the enrollment took effect by checking for the new card in late December. Keep both cards until the first premium drafts correctly, because billing errors in January are common and easy to fix with documentation in hand.

9. What Happens If You Miss December 7

If you do nothing by December 7, 2026, you keep your current plan for 2027, provided the plan is still sold in your county. That is not always a neutral outcome. When an insurer exits a market, affected members receive a notice of discontinuation and a Special Enrollment Period that lets them choose another plan outside the normal calendar. Read any letter from your plan carefully between now and the end of the year.

The Medicare Advantage Open Enrollment Period from January 1 through March 31, 2027 gives Advantage members one additional change, as described earlier, and it also lets you add a Part D plan if you return to Original Medicare. Enrollees in a plan rated five stars by Medicare can switch into that plan once between December 8 and November 30 of the following year. People who move out of their plan's service area, lose employer coverage, lose Medicaid eligibility or qualify for Extra Help get Special Enrollment Periods with different deadlines, some as short as two months.

The gap that hurts most is Medigap. A missed Annual Enrollment deadline does not create a guaranteed issue right, so a reader who drops Advantage in February and then shops for a supplement may face underwriting in most states. If a planned change in your health or your doctors is coming, decide before December 7 rather than gambling on a midyear exception that federal rules do not promise you.

10. Next Steps and the Questions Worth Asking

Five questions produce most of the clarity. Ask which carriers the person helping you is appointed with, because a licensed agent must tell you which companies pay them and cannot imply they represent every plan in your county. Ask what your total annual cost is, including premiums, copays and the out-of-pocket maximum, rather than what the monthly premium is. Ask what happens to each of your prescriptions on January 1. Ask what your guaranteed issue rights are if you later want to leave the plan. Ask for the answer in writing.

A licensed agent working in your county can pull the formularies, run the pharmacy checks and tell you which plans pay a commission on your enrollment, and that disclosure is required. Agents cannot charge you for their time, and they cannot sell a Medigap policy in a state where you lack guaranteed issue rights and pretend the underwriting does not exist. Your State Health Insurance Assistance Program offers free, unbiased counseling if you prefer no sales conversation at all, and 1-800-MEDICARE takes calls around the clock at no cost.

One earlier figure deserves a second look before you file anything: the 2026 Part B premium, the Part D deductible cap and the Part D out-of-pocket limit are all set annually by CMS and change each January, so verify the exact numbers for 2027 with the plan or with Medicare before you build a budget around them. The rules stay stable. The dollar amounts do not.

With 23 days left before the December 7, 2026 deadline, the highest-value hour you can spend is a phone call with a licensed agent who can see your prescriptions, your doctors and your county's plan offerings side by side. Bring your list of medications with doses, the names of your physicians, and your Medicare card. Ask the five questions above, get the comparison in writing, and make the change before the window closes rather than discovering in February that the network you needed was never there.

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Published 2026-11-14 12:20:59.116666+00:00