Medicare Supplement

Medigap in Milwaukee for 2026: Wisconsin's own rules and what to check this season

For Milwaukee readers on Medicare, the shift from one plan year to the next is the moment Medigap premiums, deductibles, and plan choices reset. Milwaukee is in Milwaukee County, and the Medigap rules that apply here are set at the state level, not the city level. Wisconsin is unusual: it is one of only three states (with Massachusetts and Minnesota) that standardize its own Medigap policies instead of using the federal Plan A through Plan N letters.

Milwaukee, Wis. — What's changing this Medigap season

That means the "Plan G" and "Plan N" you may have read about elsewhere are not what you will be comparing in Wisconsin. Here you compare a Basic Plan (with optional riders you add on), a 50% cost-sharing plan, a 25% cost-sharing plan, and a high-deductible plan. If a friend in another state talks about switching from Plan F to Plan G, that conversation does not translate directly to what is on offer in Milwaukee.

How Wisconsin's Medigap plans are structured

Wisconsin's Basic Plan covers a core set of benefits required under state law. From there, you can add riders — for example, riders that pick up the Part A deductible, additional home health care, or Part B excess charges — to build a policy closer to what you want. The 50% and 25% cost-sharing plans lower your premium in exchange for paying a share of covered services, and the high-deductible plan asks you to meet a set deductible before benefits kick in.

Because the pieces are modular, two people in Milwaukee can hold "the same" Basic Plan and still have very different coverage depending on which riders they added. When you compare policies, compare the riders, not just the plan name.

The Part B deductible resets every January

Original Medicare's Part B deductible resets on January 1 each year. That matters for Medigap shoppers because the cost-sharing and high-deductible designs are built around that yearly figure. When the deductible moves, so does the amount you may be responsible for before certain Medigap benefits apply.

CMS publishes the new Part B deductible each fall for the following year. You can confirm the current-year figure on Medicare.gov before you sign anything, and it is a fair question to ask any agent or insurer you speak with.

Rate-adjustment season: how to check what's really changing

Medigap premiums in Wisconsin can change once a year, and those changes are filed with the Wisconsin Office of the Commissioner of Insurance (OCI). If your renewal notice arrives and the number looks different from last year, that new rate came from a filing the state reviewed.

Three places will tell you what is actually on the market and at what price in your ZIP code:

• Medicare.gov's Medigap policy search. Enter your Milwaukee ZIP code and it will return the policies sold in Wisconsin, with the insurers offering them and their current premium ranges.
• The Wisconsin OCI Medigap rate guide. OCI publishes an annual guide that lists insurers selling Medigap in the state and their filed rates. It is free and updated on a regular schedule.
• Wisconsin's SHIP (the Board on Aging and Long Term Care's Medigap Helpline). SHIP counselors give one-on-one, unbiased help and do not sell insurance.

Insurers entering or leaving the state

Insurer participation in Wisconsin's Medigap market can shift from year to year — a company may stop selling new policies, a new one may file to enter, or an existing insurer may adjust which of the state-standardized plans it offers. Because we do not have a confirmed insurer list to share here, the honest answer is: check the OCI rate guide and the Medicare.gov Medigap search for your ZIP code before you assume last year's options are still on the shelf.

If you already have a Medigap policy and your insurer stays in the market, your coverage generally continues; the premium is what typically changes at renewal.

Guaranteed issue and switching plans

Outside of your one-time Medigap Open Enrollment (the six months that start when you are 65 and enrolled in Part B), insurers in most states can use medical underwriting to decide whether to sell you a policy or how to price it. Wisconsin has some additional protections — for example, rules that allow current Medigap policyholders to move to a policy of equal or lesser benefits at certain times — but they are specific and worth confirming with SHIP before you cancel anything.

The safest move is to have a new policy accepted and in force before you drop an existing one.

Where to get personal help in Milwaukee

• Medicare.gov or 1-800-MEDICARE (1-800-633-4227) for federal rules and the Medigap search tool.
• Wisconsin OCI (oci.wi.gov) for the current Medigap rate guide and filed rates.
• Wisconsin Medigap Helpline / SHIP for free, unbiased counseling — they do not sell plans and have no commission in the answer.