Medicare 2026

Original Medicare with Medigap vs. Advantage: how to choose

LOS LUNAS, N.M. — If you're new to Medicare, or rethinking your coverage during this fall's Annual Enrollment Period, you've probably run into the same fork in the road everyone does: stick with Original Medicare and add a Medigap policy, or go with a Medicare Advantage plan instead. Both are legitimate ways to get your Medicare benefits. They're just built very differently, and understanding that structure is the clearest way to figure out which one fits your life.

Here in Los Lunas, the choice matters year-round, but especially between October 15 and December 7, when most Medicare changes happen.

Two different roads to the same starting point

Everyone with Medicare begins with the same building blocks: Part A (hospital insurance) and Part B (medical insurance). What differs is how you receive those benefits from there.

• Original Medicare is the traditional, federally run program. You use your red, white, and blue Medicare card at any provider in the country that accepts Medicare. Most people then add a Part D drug plan and, often, a Medigap (Medicare Supplement) policy sold by a private insurer to help pay the out-of-pocket costs Original Medicare leaves behind.
• Medicare Advantage (Part C) is an all-in-one alternative offered by private insurers approved by Medicare. You still have Medicare, but the plan administers your Part A, Part B, and usually Part D benefits — often through a network of doctors and hospitals.

That's the fork. Same Medicare underneath; two different delivery systems on top.

How Original Medicare + Medigap is structured

With Original Medicare, the government pays its share of a covered service, and you're responsible for the rest — deductibles, coinsurance, and copays. There's no yearly cap on what you'd owe out of pocket for Part A and Part B services on their own.

That's where Medigap comes in. A Medigap policy is standardized across most states, meaning a Plan G from one company covers the same services as a Plan G from another. It picks up some or most of the cost-sharing Original Medicare doesn't cover. You pay a monthly premium for the Medigap policy on top of your Part B premium.

Key traits of this route:

• You can generally see any doctor or hospital in the U.S. that accepts Medicare — no network.
• No referrals needed for specialists.
• Drug coverage is separate; you'd add a stand-alone Part D plan.
• Predictable cost-sharing, but higher monthly premiums than most Advantage plans.

One important note about Medigap: the strongest consumer protections for buying a policy apply during your Medigap Open Enrollment Period — the six months starting when you're 65 or older and enrolled in Part B. Outside that window, insurers in most states can use medical underwriting.

How Medicare Advantage is structured

A Medicare Advantage plan bundles your hospital, medical, and (usually) drug coverage into one package run by a private insurer. Plans commonly use HMO or PPO networks, meaning your choice of in-network doctors matters, and some services may require prior approval from the plan.

Advantage plans often include extras Original Medicare doesn't cover, such as routine dental, vision, or hearing benefits — the specifics vary by plan and by county. Unlike Original Medicare, every Advantage plan is required to have an annual out-of-pocket maximum for Part A and Part B services, which caps your yearly medical exposure.

Los Lunas is in Valencia County, where Medicare beneficiaries typically have a wide selection of Advantage plans from multiple carriers to compare each year. To see the current-year lineup for your ZIP code, the Plan Finder at medicare.gov is the official tool.

Part D drug coverage in 2026 — the same rules, either way

Whether your drug coverage comes through a stand-alone Part D plan (with Original Medicare) or bundled inside an Advantage plan, the same program-level rules apply in 2026:

• A $2,100 annual out-of-pocket cap on covered Part D drugs.
• A maximum Part D deductible of $615 (plans can charge less).
• The old coverage gap ("donut hole") is gone as of 2025; drug coverage now moves through three phases.
• The Medicare Prescription Payment Plan lets you spread your yearly drug costs into monthly payments at no added charge — you opt in through your plan.

Higher-income beneficiaries may pay IRMAA surcharges on Part B and Part D. In 2026, IRMAA starts above $109,000 in modified adjusted gross income for a single filer (higher for joint filers), based on your tax return from two years earlier.

How to think it through

There's no universally "right" choice. But a few honest questions usually clarify things:

• How much do you travel or split time between states? Original Medicare + Medigap travels with you nationwide; Advantage plans lean local.
• Do you have doctors you want to keep? Check whether they're in-network for the Advantage plans you're considering.
• Do you prefer predictable monthly premiums or lower premiums with pay-as-you-go cost-sharing? Medigap tends to be the former; Advantage tends to be the latter, capped by the plan's out-of-pocket maximum.
• What prescriptions are you taking? Run them through Plan Finder to see how each plan's formulary treats them.
• How's your health today — and how might that change? Medigap's guaranteed-issue window when you first enroll is a one-time advantage worth understanding before you decide.

Also keep the calendar in mind. The Annual Enrollment Period runs October 15 – December 7 for changes that start January 1. From January 1 – March 31, the Medicare Advantage Open Enrollment Period lets people already in an Advantage plan switch to another Advantage plan or return to Original Medicare (and pick up a Part D plan).