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Medicare 2026

Medicare Coverage Structures for Gillette Residents

GILLETTE, Wyo. — Picking how you get your Medicare is one of the biggest choices you'll make as you approach 65 or think about switching during a future enrollment window. In Campbell County, as in the rest of the country, the choice really comes down to two paths: Original Medicare paired with a Medigap policy, or a Medicare Advantage plan. They both start with the same federal program, but they work very differently once you actually use them.

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Key takeaways

  • Medicare beneficiaries must choose between Original Medicare with Medigap or a Medicare Advantage plan, since you can't have both at once.
  • Original Medicare lets you see any doctor or hospital that accepts Medicare with no network or referrals, while Medicare Advantage plans use networks and may require referrals or prior approval, and plan options vary by county.
  • When you first sign up for Part B at 65, you get a 6-month Medigap Open Enrollment Period during which insurers must sell you a policy at their best rate regardless of health, but after that window closes insurers can use medical underwriting in most states, including Wyoming.
  • If your 2024 income was above $109,000 (single) or $218,000 (married filing jointly), you'll pay an IRMAA surcharge on top of Part B and Part D premiums in 2026, no matter which path you choose.

Here's a plain-English walk-through so you can think it through before the Annual Enrollment Period (Oct. 15 – Dec. 7) or your Initial Enrollment window.

Two paths, same starting point

Everyone with Medicare has Part A (hospital) and Part B (doctor and outpatient). What you decide is how those benefits are delivered to you.

You can't be on both paths at once. That's the fork in the road.

How you see doctors is different

With Original Medicare, you can go to any doctor or hospital in the U.S. that accepts Medicare — no network, no referrals. That matters in a place like Gillette, where you or a family member might travel to Casper, Billings, or even farther for specialty care.

With Medicare Advantage, plans use networks (HMO, PPO, and others). You may need to stay in-network, get referrals, or get prior approval before certain services. Advantage plans are set up at the county level, so what's offered in Campbell County isn't the same as what's offered in, say, Sheridan or Natrona County.

How costs are structured is different

This is where people get tripped up.

Neither path is automatically cheaper. It depends on how much care you use, what drugs you take, and whether you travel.

Prescription drugs in 2027

Drug coverage rules changed in a big way, and they apply no matter which path you pick:

If you choose Original Medicare, you'll pick a stand-alone Part D plan. If you choose Medicare Advantage, drug coverage is usually built in.

Medigap has its own enrollment rules

This is the mistake we hear about most often. When you first sign up for Part B at 65, you get a 6-month Medigap Open Enrollment Period. During that window, insurers must sell you any Medigap policy they offer, at their best available rate, regardless of your health.

After that window closes, in most states, insurers can use medical underwriting — meaning they can charge you more or turn you down based on health history. Wyoming follows the federal baseline here, so if you start on Medicare Advantage and later want to switch to Original Medicare + Medigap, getting a Medigap policy isn't guaranteed. It's worth understanding before you make your first choice.

A quick word on IRMAA

If your income is above $109,000 as a single filer (or $218,000 married filing jointly) on your 2024 taxes, you'll pay an income-related surcharge — called IRMAA — on top of your Part B and Part D premiums in 2026. This applies on both paths.

By the numbers

Medicare Part B premium, 2006–2026

The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.

$0$50$100$150$200200820122016202020242026

Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.

By the numbers

How people get Medicare in Campbell County

9% are on Medicare Advantage
(MA penetration in Campbell County)
9%
91%
Medicare Advantage Medicare Supplement (Medigap) Original Medicare only
U.S. average

MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.

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Medicare Advantage companies in Campbell County

By local enrollment size · informational, not a ranking
CompanyLocal enrollmentPlans offeredLocal agentsAction
Blue Cross Blue Shield of Michigan Mutual Ins CoRegional—Yes
Fenyx Health Insurance CompanyRegional—Yes
UnitedHealthcareNational—Yes
Aetna (CVS Health)National—Yes
Enrollment data: CMS Medicare Advantage enrollment by company (county level). Figures shown are illustrative sample data pending the current CMS file. Listed by enrollment size, largest first — this is not a ranking, recommendation, or endorsement of any company or plan.

Provided by licensed insurance partners; MyMedicarePlans.org may be compensated. Not a ranking or endorsement of any plan.

Explore

When can you enroll? An interactive year

JFMAMJJASOND
October 15 – December 7 — anyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan. Changes take effect January 1.

Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.

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The parts of Medicare

Part A covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health care. Most people pay no premium for Part A.

Good to know

Frequently asked questions

Can I switch from Medicare Advantage back to Original Medicare later?
Yes. You can switch during the Annual Enrollment Period (Oct. 15 – Dec. 7) or the Medicare Advantage Open Enrollment Period (Jan. 1 – March 31). The catch is that adding a Medigap policy at that point may require medical underwriting, depending on your situation.
Do I need a Part D plan if I don't take any prescriptions?
Most people should still enroll when first eligible. If you go without creditable drug coverage for too long, a late-enrollment penalty gets added to your premium — for as long as you have Part D.
How many Medicare Advantage plans are available in Gillette?
Gillette is in Campbell County, and plan availability is set at the county level. The number of plans and carriers changes each year. You can see the current-year list for your ZIP code using the Plan Finder at Medicare.gov.
Sources & further reading
  • CMS — Medicare basics (medicare.gov)

For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.

Medicare plans in your area changing for 2027 — check yoursCall