Patient Advocacy Without the Call Center

Wisconsin Medicare, by the Numbers

The data layer behind our Wisconsin guide and all 65 city pages, in one place: CMS enrollment, Census demographics, and federal shortage designations, county by county.

Plans we accept in Wisconsin covering ~78.9% of Wisconsin's Medicare beneficiaries
  • Original Medicare
  • UnitedHealthcare ~45% of MA members
  • Humana ~12% of MA members
  • Aetna ~6% of MA members

Coverage data 2024. Plan networks change - we confirm exactly what your plan covers before any work begins.

1,348,238Medicare beneficiaries statewide (2025)
57.7%chose Medicare Advantage plans
180,658dual-eligible for Medicare and Wisconsin Medicaid
309,685Wisconsin residents 65+ live alone
136 minmedian ER visit statewide (CMS)
156federal primary-care shortage designations

Medicare Enrollment by County

Counties covered by our city pages (28 counties, 1,016,399 beneficiaries). Each links to its anchor city page.

County Medicare beneficiaries Medicare Advantage share Dual-eligible Residents 65+ Shortage designations
Milwaukee County 164,629 67% 40,341 133,478 11
Dane County 103,874 39.3% 11,344 83,030 1
Waukesha County 103,689 59.8% 8,323 81,273 0
Brown County 56,151 70.9% 7,060 42,792 4
Racine County 46,095 61.9% 6,892 34,757 3
Outagamie County 41,729 73% 4,370 30,756 1
Winnebago County 37,481 71.1% 4,649 29,233 1
Rock County 37,349 50.3% 5,466 28,396 1
Washington County 33,847 63.2% 2,161 26,343 0
Kenosha County 33,484 53.4% 4,951 25,740 2
Marathon County 31,444 65.5% 3,639 25,737 4
Sheboygan County 28,942 60.5% 3,523 22,510 3
La Crosse County 26,492 53.8% 3,595 20,969 1
Walworth County 25,190 46.7% 2,315 20,274 2
Fond du Lac County 24,280 67.7% 2,724 20,087 1
Ozaukee County 24,242 55.9% 1,623 19,423 0
Eau Claire County 22,578 50% 3,403 17,634 0
Manitowoc County 22,178 63.8% 2,754 17,671 0
Dodge County 21,175 54% 2,133 16,398 3
Wood County 20,710 66.1% 3,010 15,848 4
Jefferson County 19,125 45.9% 2,400 15,436 5
Chippewa County 16,260 51.2% 2,238 12,741 3
Portage County 16,092 56.2% 1,606 12,556 1
Sauk County 15,988 39.6% 1,905 12,715 2
Grant County 12,230 50.8% 1,699 9,280 10
Douglas County 11,417 63.6% 1,907 8,863 0
Dunn County 10,322 48% 1,910 7,428 0
Pierce County 9,406 52.4% 915 6,825 0

Statewide, 57.7% of beneficiaries chose Medicare Advantage in 2025, a higher share than the nation overall, so prior authorizations, network questions, and denials worth appealing come up constantly. Counties above that line see the most of it. Wisconsin also runs Medigap differently from most states: with Massachusetts and Minnesota, it uses its own standardized Basic plan built up with riders instead of the federal letter plans, all regulated by the Wisconsin Office of the Commissioner of Insurance. There is no birthday rule or annual guaranteed-issue window, so a switch outside your six-month open enrollment can be medically underwritten, which makes timing matter. About 8.6% of Wisconsin seniors live below the poverty line, the group most likely to qualify for unclaimed help: SeniorCare (the state's $30-a-year drug program), federal Extra Help, and the Medicare Savings Programs Wisconsin Medicaid runs. For the full rundown, sources included, see our Wisconsin patient advocacy hub.

The Numbers Are the Backdrop. The Help Is the Point.

One dedicated advocate for the bills, appeals, appointments, and paperwork, serving all 72 Wisconsin counties virtually, usually at $0 with Medicare.

Or start from your city: every Wisconsin city we serve.

Sources: CMS Medicare Monthly Enrollment (2025); US Census Bureau ACS 2023 5-year; CMS Care Compare Timely & Effective Care (median ER minutes, period ending 09/30/2025); HRSA Health Professional Shortage Area designation file. Data retrieved 2026-08-20. Understood Care is an independent private advocacy service, not a government agency.