Medicare Resources · Wisconsin
Medicare Advantage vs. Medicare Supplement in Wisconsin
The direct answer
In Wisconsin, Medicare Advantage typically costs less per month and often bundles dental, vision, and drug coverage — but it uses a provider network you must stay inside. Wisconsin Medicare Supplement (the state's Basic Plan + optional riders — Wisconsin does not use national Plan G or Plan N) costs more per month but works with any provider who accepts Medicare, including both Gundersen Health System and Mayo Clinic Health System, with no network to verify. Neither path is better outright; the rest of this guide unpacks exactly where they differ so you can see which fits your situation.
- Medicare Advantage: often $0-$50/mo premium, network-based, annual cost-sharing capped at $9,250 in-network (2026) — CMS's ceiling; the actual 2026 average plan limit is closer to $5,421 (KFF)
- Wisconsin Medigap (Basic Plan + riders): illustrative $80-$180/mo, no network, near-total cost predictability once riders are added
- Wisconsin uses Basic Plan + riders, never the national Plan G/N letters
- Your 6-month Medigap guaranteed-issue window starts at 65 + Part B enrollment — not at Annual Enrollment
- A little-known federal 12-month "trial right" lets first-time Medicare Advantage enrollees switch to guaranteed-issue Medigap if they change their mind early
How each path actually works
Every Medicare beneficiary starts in the same place: Original Medicare, Part A (hospital) and Part B (medical), run directly by the federal government with no provider network. From there, you choose one of two structurally different ways to fill Original Medicare's gaps — you cannot combine both.
Original Medicare + Wisconsin Medicare Supplement
The structure: three separate pieces working together
- Original Medicare (Parts A + B) pays first, per its own rules
- Your Wisconsin Medigap policy (Basic Plan + riders) pays most of what's left
- A separate, standalone Part D plan covers prescriptions
- No provider network — any Medicare-accepting provider, nationwide
Medicare Advantage (Part C)
The structure: one bundled private plan replaces Original Medicare
- A private insurer, approved by CMS, administers your Part A and Part B benefits
- Most plans bundle Part D drug coverage into the same plan
- Many plans add dental, vision, hearing, or fitness benefits
- Uses an HMO or PPO provider network — you confirm your doctors are in it
Because you can't run both at once, this is one of the most consequential decisions most people make at 65 — and, outside specific guarantees covered below, not always easy to reverse.
Cost structure: premium vs. cost-sharing
The two paths don't just cost different amounts — they charge you in fundamentally different ways.
Medicare Advantage: lower premium, cost-sharing up to a cap
Medicare Advantage plans frequently carry $0-$50 monthly premiums (beyond your standard Part B premium), but every service — a specialist visit, a hospital day, an imaging test — usually comes with a copay or coinsurance amount. Those costs accumulate toward an annual out-of-pocket maximum. CMS's 2026 Medicare Advantage and Part D Rate Announcement sets that ceiling at $9,250 for in-network services — actually a decrease from $9,350 in 2025. Plans can set their limit lower, and per KFF's 2026 analysis, the enrollment-weighted average in-network limit is $5,421 — well under the regulatory maximum, though your specific plan's number is what matters, not the average.
Wisconsin Medigap: higher premium, near-total predictability
A Wisconsin Medicare Supplement policy works the other direction: a higher, fairly stable monthly premium in exchange for Original Medicare's cost-sharing gaps being paid by your policy instead of you. As a rough illustration — not a published rate, and not a quote — a Basic Plan with the Part A Deductible Rider and Part B Excess Charges Rider often runs in the neighborhood of $80-$180/month for a 65-year-old, varying by carrier, age, tobacco use, and which riders you select. Once those riders are in place, a Wisconsin Medigap policyholder's remaining exposure to Original Medicare's cost-sharing is close to zero for most covered services.
What Original Medicare leaves exposed either way
Both paths start from the same 2026 Original Medicare cost-sharing baseline: a $1,736 Part A inpatient hospital deductible per benefit period, a $202.90 standard Part B monthly premium, and a $283 annual Part B deductible (after which Part B pays 80% of approved costs, leaving you the other 20% with no cap under Original Medicare alone). That uncapped 20% coinsurance is exactly the gap a Wisconsin Medigap policy is built to close — and exactly what a Medicare Advantage plan's out-of-pocket maximum caps a different way.
Add Part D: for 2026, covered drug costs are capped at $2,100 for the year under the Inflation Reduction Act redesign, whether your drug coverage comes bundled into a Medicare Advantage plan or as a standalone plan alongside Medigap.
Networks and referrals: Gundersen, Mayo, and beyond
This is often the deciding factor for La Crosse-area residents specifically, because two large health systems serve the region.
Wisconsin Medicare Supplement has no provider network. Any doctor, clinic, or hospital that accepts Medicare is covered — nationwide, not just in Wisconsin. If you see specialists at Gundersen Health System for one condition and Mayo Clinic Health System for another, or you split time between the two, Medigap never raises a network question. No referrals are required to see a specialist under Original Medicare.
Medicare Advantage uses a defined network — typically an HMO (referrals required, in-network only except emergencies) or a PPO (referrals not required, out-of-network care allowed at a higher cost). Not every Medicare Advantage plan available in La Crosse County includes both Gundersen and Mayo Clinic Health System; some are built primarily around one system's network. Networks can also change from one plan year to the next, even for a plan you're already enrolled in — which is exactly why an annual review during Annual Enrollment matters even for a plan you've been happy with.
Before enrolling in any Medicare Advantage plan, we confirm your specific doctors, specialists, and preferred hospital are in-network — not just that the plan's marketing materials mention "Gundersen" or "Mayo" somewhere.
Wisconsin's Basic Plan + riders — not Plan G or Plan N
If you've researched Medicare Supplement options online, you've likely seen "Plan G" or "Plan N" mentioned constantly. Those national letter plans don't exist in Wisconsin. Wisconsin is one of three states with its own state-standardized Medicare Supplement system, administered by the Wisconsin Office of the Commissioner of Insurance. Every Wisconsin Medigap policy starts with a mandatory Basic Plan, which — per Wis. Admin. Code Ins 3.39(5m)(d) — must include Part A hospital coinsurance (including 365 additional lifetime hospital days once Medicare's own benefits are exhausted), Part B coinsurance, skilled nursing facility coinsurance, hospice cost-sharing, blood, and several other required benefits.
Wisconsin residents then add optional riders on top — most commonly the Part A Deductible Rider (covers the $1,736 Part A hospital deductible) and the Part B Excess Charges Rider (covers the extra amount a non-participating provider can legally charge above Medicare's approved rate). Basic Plan + both riders is the combination most comparable to what a national Plan G buyer would get in the other 47 states — but "comparable to Plan G" is a translation for people relocating from elsewhere, not the actual name of anything sold here. If an agent, call center, or website tries to sell you "Plan G" in Wisconsin, they're either using shorthand imprecisely or don't know Wisconsin's rules.
For the full rider-by-rider breakdown — including the foreign travel emergency rider, home health rider, and every combination's approximate cost — see our complete Wisconsin Medicare Supplement guide.
Enrollment timing: three windows that aren't the same
This is the part people most often get wrong, because it's tempting to assume one calendar governs both decisions. It doesn't.
Initial Enrollment Period (IEP)
A 7-month window — 3 months before, the month of, and 3 months after you turn 65 (42 CFR § 406.21) — when you first enroll in Original Medicare, choose a Medicare Advantage plan, or buy a Medigap policy for the first time.
6-month Medigap guaranteed-issue window
Runs from the first month you're both 65+ and enrolled in Part B (42 U.S.C. § 1395ss(s)(2)). During this window, Wisconsin carriers must sell you a Medigap policy regardless of health history. It does not reset every year and does not align with Annual Enrollment.
Annual Enrollment Period (AEP)
October 15 - December 7 every year (42 CFR § 422.62). Any Medicare beneficiary can switch between Medicare Advantage plans, or between Medicare Advantage and Original Medicare, effective the following January 1.
The Medicare Advantage "trial right" (12 months)
If Medicare Advantage was your very first Medicare coverage at 65 and you disenroll within 12 months, federal law (42 U.S.C. § 1395ss(s)(3)(B)(vi)) guarantees you can buy a Medigap policy without health-status denial or a higher price — even outside your original 6-month window.
Who tends to prefer which path
There's no universal right answer, but a few patterns show up consistently in how western Wisconsin clients think about this decision:
Medicare Advantage tends to fit
- People who are relatively healthy and use care infrequently
- People who stay local and are comfortable confirming network coverage each year
- People who want dental, vision, hearing, or fitness benefits bundled in
- People prioritizing a lower or $0 monthly premium over cost predictability
Wisconsin Medigap tends to fit
- People who see specialists frequently, or have chronic conditions requiring ongoing care
- People who split care between Gundersen and Mayo Clinic Health System, or travel often
- People who prioritize predictable costs over the lowest monthly premium
- People who want zero risk of a network or provider surprise
These are tendencies, not rules — we've placed plenty of relatively healthy clients in Medigap for the peace of mind, and plenty of higher-care-need clients in a specific Medicare Advantage plan that happened to fit their exact providers and drugs well. The comparison only means something once it's run against your actual doctors, prescriptions, and budget, which is what a free consultation is for.
La Crosse County's 2026 Medicare Advantage market
To make the "lower premium, network trade-off" comparison concrete, here's what the Medicare Advantage side actually looks like in La Crosse County for 2026, pulled live from CMS's Medicare Advantage/Part D Landscape file:
- 13 Medicare Advantage (MA-PD) plans available across 6 carriers — Group Health Cooperative of Eau Claire, Aetna Medicare, Security Health Plan of Wisconsin, Humana, Quartz Medicare Advantage, and UnitedHealthcare
- 5 of those 13 plans carry a $0 monthly premium beyond standard Part B
- The highest CMS Overall Star Rating among them is 4.5 stars
- In-network maximum out-of-pocket limits across these plans range from $2,200 to $9,250 — a wide spread that makes "just pick the $0 plan" poor advice without checking this number too
That spread is the whole point of this article in miniature: two $0-premium plans in the same county can carry very different real-world cost exposure. We compare the actual plan details — not just the premium — against your specific doctors and prescriptions before you enroll in anything.
Not sure which path fits your situation? We compare Medicare Advantage and Wisconsin Medicare Supplement side by side against your actual doctors, prescriptions, and budget — free, with no pressure. Call or text (608) 799-8434 or schedule a free conversation with our team in Onalaska.
Frequently asked questions
Is Medicare Advantage or Medicare Supplement better in Wisconsin?
Neither is better outright — they trade off differently. Medicare Advantage typically costs less month-to-month and often bundles dental, vision, and drug coverage, but uses a provider network you must stay inside. Wisconsin Medicare Supplement (Basic Plan + riders) costs more per month but works with any provider who accepts Medicare, including both Gundersen Health System and Mayo Clinic Health System, with no network to verify. The right fit depends on how often you use care, which providers you see, and whether you'd rather pay a predictable premium or lower monthly costs with variable copays.
Can I switch from Medicare Advantage back to a Wisconsin Medicare Supplement plan?
Sometimes without health questions, sometimes not. If you enrolled in Medicare Advantage as your very first Medicare coverage at 65, federal law (42 U.S.C. § 1395ss(s)(3)(B)(vi)) gives you a 12-month trial right to disenroll and buy a Wisconsin Medigap policy on a guaranteed-issue basis. Outside that window — for example, switching after years on Medicare Advantage — Wisconsin carriers can typically require health underwriting and may decline coverage or charge more. We track these windows for clients considering a switch.
Does Wisconsin Medicare Supplement work with Gundersen and Mayo Clinic Health System?
Yes, without exception. Medigap has no provider network — any doctor or hospital that accepts Medicare is covered, so seeing specialists at both Gundersen Health System and Mayo Clinic Health System (or splitting your care between them) never raises a network question. On Medicare Advantage, that depends on the specific plan; not every plan in the La Crosse area includes both systems, so we verify your specific providers before you enroll.
How much more does Wisconsin Medicare Supplement cost than Medicare Advantage?
As a rough illustration, a Wisconsin Basic Plan with common riders (Part A Deductible Rider, Part B Excess Charges Rider) often runs $80-$180/month, versus $0-$50/month for many Medicare Advantage plans — but that premium gap doesn't tell the whole cost story. Medicare Advantage plans add copays and coinsurance up to an annual out-of-pocket limit that, per CMS's 2026 rate announcement, cannot exceed $9,250 in-network (though KFF reports the actual 2026 average is closer to $5,421). A heavy healthcare user on Medicare Advantage can pay more over a year than the higher Medigap premium. We model your expected annual cost under both paths before you decide — actual premiums vary by carrier, age, and rider selection, so request a personalized quote.
When can I switch between Medicare Advantage and a Wisconsin Medicare Supplement plan?
The Annual Enrollment Period (October 15 - December 7 each year, 42 CFR § 422.62) lets you move between Medicare Advantage and Original Medicare for the following January 1. But moving toward Medigap at that point doesn't guarantee acceptance — your 6-month federal guaranteed-issue window (42 U.S.C. § 1395ss(s)(2)) runs from when you first turn 65 and enroll in Part B, not from AEP. Outside that window or the 12-month MA trial right, Wisconsin carriers can medically underwrite a Medigap application. Timing this correctly is one of the most consequential decisions in the whole process.
Sources
- Centers for Medicare & Medicaid Services (CMS). 2026 Medicare Parts A & B Premiums and Deductibles. cms.gov
- Federal Register. Medicare Program; Medicare Part B Monthly Actuarial Rates, Premium Rates, and Annual Deductible Beginning January 1, 2026 (Document #2025-20251). federalregister.gov
- Centers for Medicare & Medicaid Services (CMS). Final CY 2026 Part D Redesign Program Instructions. cms.gov
- Centers for Medicare & Medicaid Services (CMS). 2026 Medicare Advantage and Part D Rate Announcement. cms.gov
- KFF (Kaiser Family Foundation). Medicare Advantage Out-of-Pocket Limits: Variation and Trends (2026). kff.org
- Centers for Medicare & Medicaid Services. 42 CFR § 422.62 — Medicare Advantage Annual Enrollment Period. ecfr.gov
- Centers for Medicare & Medicaid Services. 42 CFR § 406.21 — Initial Enrollment Period. ecfr.gov
- U.S. Code. 42 U.S.C. § 1395ss(s)(2) and (s)(3)(B)(vi) — Medigap 6-month guaranteed issue and the Medicare Advantage trial-right guaranteed issue. uscode.house.gov
- Wisconsin Administrative Code. Ins 3.39(5m)(d) — Basic Medicare Supplement Plan benefits. docs.legis.wisconsin.gov
- Centers for Medicare & Medicaid Services (CMS). Medicare Advantage/Part D Landscape File, Plan Year 2026 — La Crosse County, Wisconsin. cms.gov
Compliance disclosures: We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov, 1-800-MEDICARE, or your local State Health Insurance Assistance Program (SHIP) to get information on all of your options. Not affiliated with or endorsed by the U.S. government or the federal Medicare program. This article is for general information only and is not medical, insurance, tax, or legal advice. Eligibility, costs, plan availability, and Wisconsin Medigap rules may change; confirm current details at oci.wi.gov or Medicare.gov. Consult a licensed agent. Hougom Insurance Agency is a licensed independent insurance agency (NPN 20742808). Plan year 2026 figures used throughout.
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Related reading: Wisconsin Medicare Supplement: Basic Plan & Riders Explained → | Understanding Medicare: The ABCD's Explained → | Your 2026 Medicare Guide for the La Crosse Area →