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Medicare Supplement Plans Wisconsin

Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) | Last updated October 8, 2026

For 2027, the best Medigap option in Wisconsin is usually the Basic plan plus whichever riders you need, since Wisconsin does not follow the national Plan A through N letters. Line up policies across insurers by the Basic plan and each rider.

Wisconsin has its own way of standardizing Medigap: each insurer sells a Basic plan with identical core benefits, and optional riders add coverage like the Part A deductible, Part B excess charges or extra home health care. Wisconsin also permits 50% and 25% cost-sharing plans and a high-deductible plan.

See Medicare plans Wisconsin.

✔ Licensed across all 50 states
✔ Built on CMS 2027 data
✔ No-cost plan comparison

Key Highlights

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Rather than plan letters, Wisconsin uses a Basic plan plus optional riders.

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Options with cost sharing or a high deductible are available too.

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For Wisconsin residents 65 and older, SeniorCare is the state’s drug assistance program.

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For the best access, buy during your Medigap Open Enrollment Period.

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Add a Part D plan or use SeniorCare for drugs.

Compare plans and enroll online

Wisconsin's Medigap Plans

Rather than Plans A through N, Wisconsin mandates a Basic plan covering the core gaps in Original Medicare and allows insurers to offer optional riders, such as coverage for the Part A deductible, extra home health care, the Part B deductible or Part B excess charges. Cost-sharing and high-deductible versions are also permitted in Wisconsin.

Wisconsin Option What It Is May Fit If
Basic plan Core Medigap benefits required in Wisconsin You want solid coverage at a lower premium
Riders Optional add-ons for specific gaps You want to tailor coverage
Cost-sharing plans Lower premiums, with cost sharing up to a yearly limit You want catastrophic protection for less
High-deductible plan Lowest premium after a yearly deductible You are healthy and have savings

Compare with care: in Wisconsin, line up policies by the Basic plan and the specific riders each one includes, rather than by letter.

SeniorCare: Wisconsin Drug Assistance

Wisconsin residents 65 and older can get help with prescription drugs through SeniorCare, the state’s program, with costs tied to income. Because it counts as creditable coverage, you can generally use SeniorCare in place of Part D and avoid a late enrollment penalty if you switch later. Weigh SeniorCare against Part D plans for your drugs.

Understanding Medicare Supplement Plans in Wisconsin

When to Buy Wisconsin Medigap

Key Takeaway

The best time to buy is your six-month Medigap Open Enrollment Period, which begins once you are 65 or older and enrolled in Part B. During it, insurers cannot turn you down or charge more because of health conditions.

In Wisconsin, federal guaranteed issue rights apply as well, generally within 63 days after other coverage ends:

You May Have a Right to Buy If

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Your Medicare Advantage plan exits your area or stops serving Medicare

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You enrolled in Medicare Advantage when you first became eligible at 65 and want to go back within the first year

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You left a Medigap policy to try Medicare Advantage for the first time and want to go back within a year

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Employer or union coverage that pays after Medicare stops

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Your Medigap insurer goes bankrupt or deceives you

How Wisconsin Medigap Prices Are Set

Your Age

Many insurers charge more as you get older.

Your ZIP Code

Prices vary by state and area.

Tobacco Use

Tobacco users usually pay more.

Discounts

Household or other discounts, which vary by insurer and state.

Pricing Method How the Premium Is Set Over Time
Community-rated All people in an area pay one premium, whatever their age Does not go up as you age, but may go up for inflation and other reasons
Issue-age-rated Based on your age when you buy Does not go up as you age, but may go up for other reasons
Attained-age-rated Based on your current age Rises as you age, on top of other increases

Which method applies depends on the insurer and the state. Before buying, find out how a policy is priced, not only what it costs now.

Medigap Riders Worth Considering

Riders are important because the Basic plan in Wisconsin leaves certain gaps. With the Part A deductible rider, you are shielded from a big bill in each hospital benefit period, and the excess charge rider counts if your doctors do not accept Medicare assignment. Get prices for the Basic plan both with and without each rider; at times a rider costs very little compared with the risk it takes away.

Insurance companies offering Medicare Supplements

Which Riders Are Worth It

Rider What It Adds Worth It If
Part A deductible Pays the hospital deductible in each benefit period You want protection from hospital costs
Part B excess charges Covers charges above Medicare’s approved amount Your doctors do not accept assignment
Part B deductible Pays the annual Part B deductible (restricted by federal rules for new enrollees) Check eligibility
Additional home health care Expands home health coverage You expect home care needs

Find & Compare Plans Online

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Wisconsin Medigap vs Medicare Advantage

Medicare Advantage Original Medicare + Medigap
Monthly premium Often low or $0 (2027 average $12, CMS) Higher; varies by plan letter, age and ZIP
Doctors Usually a network Any provider in the U.S. that accepts Medicare
Costs when you get care Copays and coinsurance up to a yearly maximum Low and predictable; on Plan G, little or nothing once the Part B deductible is met
Drug coverage Usually included Add a separate Part D plan
Dental, vision, hearing Many plans may include some coverage Not included
Changing later Every year during Annual Enrollment Health questions in most states once your Medigap Open Enrollment Period ends

For Wisconsin, treat the Medigap column as the Basic plan plus riders.

Cost-Sharing and High-Deductible Plans in Wisconsin

In addition to the Basic plan, Wisconsin permits plans that swap a lower premium for higher cost sharing. Cost-sharing plans cover a fixed percentage of covered costs, 50% or 75%, until you reach a yearly out-of-pocket limit, and then they pay in full. With the high-deductible plan, you must meet a yearly deductible before it pays.

Much like national Plans K, L and High-Deductible Plan G, these options trade a lower premium for more exposure in a bad year. They may fit healthy people looking for catastrophic protection.

Medicare Advantage in Wisconsin

Medicare Advantage, sometimes called Part C, lets you receive your Medicare benefits through a Medicare-approved private insurer. These plans cover everything Original Medicare Part A and Part B cover, with the exception of hospice care, which Original Medicare continues to pay for. Most also bundle Part D drug coverage, and many may tack on extras like routine dental, vision and hearing benefits.

The trade-off is that Medicare Advantage plans generally rely on doctor and hospital networks and may call for referrals or prior authorization for certain services. Each Medicare Advantage plan sets a yearly out-of-pocket maximum for covered medical care, something Original Medicare lacks. You still pay your Part B premium, along with the plan’s premium if there is one.

Feature HMO PPO
Out-of-network care Not covered except emergencies and urgent care Covered at a higher cost
Referrals for specialists Usually required Usually not required
Premiums Usually lower Usually higher
Out-of-pocket maximum In-network limit In-network limit plus a higher combined limit
Best for Lower costs, local care Flexibility, travel, keeping specific doctors

Advantages

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Often a low or $0 premium

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A yearly out-of-pocket maximum

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Drug coverage usually included

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Dental, vision and hearing benefits may be included in many plans

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One card and one plan

Tradeoffs

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Networks; except for emergencies, HMOs require in-network care

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Prior authorization and referrals are common

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Copays add up if you use a lot of care

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Plans and networks can change every year

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Moving to Medigap later may involve health questions

Part D and SeniorCare

$700

Maximum 2027 Part D deductible, up from $615.

$2,400

2027 Part D out-of-pocket cap, up from $2,100.

About $36

CMS average standalone Part D premium for 2027, an increase of under $1.

$7

Projected 2027 average for the drug portion of a Medicare Advantage premium, a decrease from $11.32.

In Wisconsin, you can pick a standalone Part D plan, SeniorCare, or in some cases both. Because SeniorCare counts as creditable coverage, you won’t face a Part D late penalty if you sign up for a Part D plan later. Compare what your drugs would cost in total under each.

Turning 65 in Wisconsin

When you turn 65 in 2027, you get a seven-month Initial Enrollment Period: the three months before your birthday month, the birthday month itself and the three months that follow. If you sign up in the first three months, coverage begins on the first day of your birthday month.

Turning 65 Checklist

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Enroll in Part A and Part B, unless you have qualifying employer coverage and decide to postpone Part B

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Choose between Medicare Advantage and Original Medicare plus Medigap

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Enroll in a drug plan, or a Medicare Advantage plan that includes drugs, to avoid a late Part D penalty

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If you go with Medigap, purchase during your six-month Medigap Open Enrollment Period

Help Paying Medicare Costs

When your income and savings are limited, two programs can greatly lower your Medicare costs:

Medicare Savings Programs

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Run by your state Medicaid office

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May cover your Part B premium, and in some cases deductibles and coinsurance

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Income and asset limits vary by state

Extra Help (Part D)

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Run by Social Security

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Lowers Part D premiums, deductibles and copays

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Those enrolled in a Medicare Savings Program qualify automatically

If you qualify for both Medicare and full Medicaid, you may also be able to join a Dual Special Needs Plan. See help for low-income Part D beneficiaries.

How Medigap Claims Work

Usually you won’t ever file a Medigap claim. Your doctor sends the bill to Medicare, Medicare pays its portion, and the claim passes automatically to your Medigap insurer, which then pays its portion. A Medicare Summary Notice and an explanation of benefits show you what each one paid.

Rate Increases and Switching Insurers Later

Once you buy Medigap, its benefits never change, but its premiums can. Insurers submit rate increases to state regulators, frequently once a year. Since the same plan letter has the same benefits everywhere, moving to a cheaper insurer can cut costs while your coverage stays the same.

The drawback is underwriting. Outside your Medigap Open Enrollment Period or a guaranteed issue situation, most states allow the new insurer to ask health questions and turn you down. Do not cancel your current policy until the new one has been approved and is in force.

Comparing Wisconsin Medigap Insurers

Wisconsin Medigap is sold by many insurers, from national companies to regional ones. Since the Basic plan is identical statewide, comparing comes down to what the Basic plan costs, what each rider you want costs, how the insurer sets prices, its rate increase history and its service.

Step by Step

1

Choose the riders you want. The most common ones cover the Part A deductible and excess charges.

2

Price the same combination with several insurers. Get at least three quotes.

3

Find out the pricing method and rate history. Ask about Wisconsin in particular.

4

Ask about any discounts. Payment or household ones.

5

Use open enrollment if possible. Health won’t affect pricing.

Record each quote in a side-by-side list: Basic plan premium, the premium for each rider, total, pricing method and recent increases. Over ten years, the lowest total today is not always the best purchase.

Free Help in Wisconsin

Free counseling is available from Wisconsin’s State Health Insurance Assistance Program and from the Medigap Helpline run by the Board on Aging and Long Term Care.

Free Help Comparing Plans

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Available any time: Medicare Plan Finder on Medicare.gov

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1-800-MEDICARE (1-800-633-4227), reachable 24 hours a day on all seven days of the week

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Your State Health Insurance Assistance Program (SHIP), which provides free, unbiased counseling

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A licensed agent or insurance broker, who can compare plans across several insurers for free

Gather your Medicare card, a list of your drugs and doses, your doctors and your preferred pharmacies before you call. That way a long conversation becomes a quick one.

Your Medigap Open Enrollment Period in Detail

You get a six-month Medigap Open Enrollment Period beginning in the first month you are both 65 or older and enrolled in Part B. It occurs only once and can’t be restarted. During this period, insurers have to sell you any Medigap plan they offer in your state at the same price healthy people pay.

If you work past 65, keep employer coverage and postpone Part B, your Medigap Open Enrollment Period does not begin until you sign up for Part B. Signing up for Part B early when you do not need it starts the clock and can waste this protection.

Switching From Medicare Advantage to Medigap

Step by Step

1

See if you have a guaranteed issue right. One example is when your plan is ending or you are still in your first year of Medicare Advantage.

2

If you don’t, look up your state’s rules. A few states grant extra rights; most permit health questions.

3

Get your Medigap application in before leaving Medicare Advantage. Confirm your approval first.

4

Join a Part D plan. Medigap does not cover drugs.

5

Time your exit from Medicare Advantage correctly. Use Annual Enrollment or the window from January to March.

Medigap With Employer or Retiree Coverage

With coverage through a current employer, you may not need Medigap yet, and postponing Part B can save your Medigap Open Enrollment Period for later. Retiree coverage works differently: it can act like a supplement, so weigh it against Medigap before you give it up, since you may not be able to regain retiree coverage.

You generally have a guaranteed issue right to buy certain Medigap plans when employer or union coverage that pays after Medicare comes to an end.

Pre-Existing Condition Waiting Periods

When you purchase Medigap during your open enrollment period or under a guaranteed issue right, you generally cannot be turned down or charged extra because of health conditions. Even so, if you lacked creditable coverage beforehand, the insurer may apply a waiting period of up to six months before it pays for a pre-existing condition. Having had creditable coverage shortens or eliminates that wait.

The 30-Day Free Look Period

When you swap one Medigap policy for another, you generally have 30 days to decide if you want to keep the new one. During that period, pay both premiums, and hold off on canceling the old policy until you’re confident in the new one.

How to Read a Medigap Quote

Check Each Quote For

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Plan letter, so you compare like with like

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Monthly premium plus any first-year or enrollment discount

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Pricing method: community-rated, issue-age or attained-age

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Household or payment discounts applied

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Effective date and any application conditions

When a quote has an introductory discount, find out what the premium will be once it expires.

Common Medigap Mistakes

Avoid These

1

Letting your open enrollment period pass. After it ends, you may face health questions.

2

Picking on current price only. Pricing method and rate history count.

3

Forgetting Part D. The late penalty is permanent.

4

Switching from Medigap to Medicare Advantage with no way back planned. Returning could mean answering health questions.

5

Dropping a policy before the new one is approved. This could leave you with no coverage.

Medigap and Medicaid

With full Medicaid, you generally do not need Medigap, and insurers generally are not allowed to sell you a policy that duplicates Medicaid benefits. A Medicare Savings Program, if you qualify, may pay your Part B premium and sometimes deductibles and coinsurance; check whether a Medigap policy would still add value for you.

What Medigap Does Not Cover

Not Covered by Medigap

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Prescription drugs: add a standalone Part D plan

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Routine dental care, hearing aids, and eye exams for glasses

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Long-term custodial care, whether in a nursing home or at home

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Private-duty nursing

In 2027, a standalone Part D plan can have a deductible of no more than $700 and an out-of-pocket cap of $2,400. Buy it with Medigap to avoid a late enrollment penalty that lasts for life.

Medigap Under 65

If disability or end-stage renal disease gives you Medicare before 65, federal law does not make insurers sell you a Medigap policy, though many states require it. Prices for those under 65 can run much higher, and plan options may be limited. At 65, you get a fresh six-month Medigap Open Enrollment Period, during which you can buy any plan sold in your state at the same prices others your age pay.

Aspirus Exit and Your Medigap Rights

For 2027, Aspirus Health Plan is exiting Medicare Advantage across its 21 Wisconsin counties. Affected members can pick a different plan or switch to Original Medicare with a Wisconsin Medigap Basic plan plus riders, usually with a guaranteed issue right.

Bottom Line

The Bottom Line

For Wisconsin, pick the Basic Medigap plan and the riders that fit your needs, compare insurer prices, purchase during your Medigap Open Enrollment Period, and cover drugs with Part D or SeniorCare.

Compare plans and enroll online

Frequently Asked Questions

➤ What is the best Medigap plan in Wisconsin?

For many people, the best fit is Wisconsin’s Basic plan paired with the riders that match their needs, such as the Part A deductible rider. Because Wisconsin uses its own standardized designs, compare rider combinations and premiums from several insurers in your area.

➤ Does Wisconsin have Plan G?

No, Wisconsin does not sell the lettered Plan G. Instead, it uses its own standardized Basic plan, and you can add optional riders to build coverage similar to what lettered plans offer in other states.

➤ What is SeniorCare?

SeniorCare is Wisconsin’s prescription drug assistance program for residents 65 and older. It counts as creditable drug coverage, which can matter if you delay joining a Part D plan, since Medigap itself does not include drug coverage.

➤ When can I buy Medigap in Wisconsin?

The best time is your six-month Medigap Open Enrollment Period, which starts the month you are 65 or older and enrolled in Part B, or during a guaranteed issue window. Outside those times, insurers may use health questions to decide whether to accept you.

➤ Where can I get help?

Wisconsin’s SHIP and the Medigap Helpline both offer free help understanding the Basic plan, riders and your options. A licensed agent can also compare Wisconsin Medigap premiums from several insurers at your ZIP code, so you can see which riders are worth the added cost.

➤ Can I use a Wisconsin Medigap plan with Medicare Advantage?

No, Medigap cannot be used with Medicare Advantage. A Wisconsin Medigap policy works alongside Original Medicare, so if you are in a Medicare Advantage plan you would need to leave it to use Medigap coverage.

➤ Does Wisconsin Medigap include drug coverage?

No, Wisconsin Medigap plans do not include Part D prescription coverage. You can buy a separate Part D plan or check whether SeniorCare fits your situation, and for 2027 the Part D deductible is $700 with a $2,400 out-of-pocket cap.

➤ How are Wisconsin Medigap premiums priced?

Insurers set prices using one of three methods: community-rated, issue-age-rated or attained-age-rated. The method affects how your premium may change as you get older, so ask each insurer which method it uses before buying and compare likely costs over time.

➤ What does Original Medicare not cover in Wisconsin?

Original Medicare does not cover routine dental, routine vision or eyeglasses, hearing aids or long-term custodial care. Wisconsin Medigap plans fill cost-sharing gaps in Original Medicare, but they generally do not add these services either.

Have Questions?

Speak with a licensed insurance agent

1-833-641-4938

TTY users 711

Mon-Fri: 8am-9pm ET

Find & Compare Plans Online

Speak with a licensed insurance agent

1-833-641-4938TTY 711

Mon-Fri: 8am-9pm ET

ZRN Health & Financial Services, LLC, a Texas limited liability company

( Medicare Expert )

Russell Noga is the CEO of ZRN Health & Financial Services, and head content editor of several Medicare insurance online publications. He has over 15 years of experience as a licensed Medicare insurance broker helping Medicare beneficiaries learn about Medicare, Medicare Advantage Plans, Medigap insurance, and Medicare Part D prescription drug plans.