2027 open enrollment. 3.15M must pick a new plan.

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Vlada / Medicare Advantage / Wisconsin

Medicare Advantage plan exits 2027 in Wisconsin, by county

58,475 of Wisconsin's 652,819 Medicare Advantage members (9.0%) are in a plan that is not sold in their county for 2027, measured from the CMS 2027 Landscape and crosswalk against September 2026 enrollment. Nationally the share is 10.6%.

Period: plan year 2027 against September 2026 members · Updated 2026-10-19 · Next: CMS January 2027 enrollment (February 2027): where the members landed

members, Sept 2026
652,819
members, Sept 2026
must pick for 2027
58,475
must pick for 2027
share of members
9.0%
share of members
counties
72
counties

Members who must pick a new plan each year, 2016 to 2027

Members of individual Medicare Advantage plans in Wisconsin whose plan is not sold in their county the next year, by plan year; the share of all members at the top of each bar. Orange: the last three years.

017k34k51k68k3.6%20160.5%20170.4%20180.0%20190.0%20200.0%20210.1%20220.6%20230.1%20242.5%202510.4%20269.0%2027

Every Wisconsin county, 2027

Members in September 2026; those whose plan is not sold in their county for 2027; their share; of those, the members offered a new or renumbered plan by their own company in the county, and the members whose company sells no plan there for 2027. Sorted by members who must pick. Each county links to its own page: the plans that end, the companies, enrollment and penetration since 2015, the Stars.

CountyMembers, Sept 2026Must pick for 2027ShareOffered a new or renumbered planCompany gone
Kenosha14,9484,60830.8%00
Marathon19,9214,57923.0%2,8341,611
Wood13,1433,57227.2%2,834556
Dodge10,3222,95728.6%00
Dane28,2272,7869.9%0919
Portage8,1351,96124.1%1,127797
Eau Claire7,3971,91825.9%1,225623
La Crosse12,7721,86014.6%01,860
Lincoln4,7911,85738.8%638779
Oconto7,7701,66421.4%21823
Walworth10,2181,61515.8%00
Oneida5,9781,57826.4%1,009551
Langlade3,8041,57041.3%414383
Douglas2,6951,41352.4%01,327
Chippewa6,2581,39622.3%1,1690
Rock12,7491,28510.1%00
Waushara4,9161,17423.9%4149
Vilas3,5051,12432.1%604286
Jefferson7,0681,10215.6%00
Clark4,46699522.3%832117
Barron5,43391016.7%8500
Bayfield1,31990268.4%0902
Sauk3,86679920.7%0358
Adams3,28278423.9%222237
Brown37,7627432.0%0126
Green Lake3,51270220.0%077
Price2,40164226.7%430182
Taylor3,07663320.6%341242
Door4,64658812.7%042
Outagamie29,4335611.9%0103
Grant1,84549226.7%00
Crawford1,14348842.7%0276
Pepin65545970.1%0459
Marinette8,5134525.3%0144
Pierce1,00244944.8%0399
Columbia4,7074459.5%0262
Rusk2,33640817.5%3830
Shawano7,4843835.1%13281
Green2,70138114.1%00
Washburn2,11637617.8%3640
Sawyer2,27436316.0%3630
Jackson1,97733917.1%2990
Iron1,05033431.8%27049
Vernon3,13332010.2%0320
Dunn2,88230410.5%2780
Polk2,05829314.2%790
Winnebago26,0732861.1%052
Trempealeau3,3082808.5%1930
Burnett1,64626115.9%1220
Marquette2,5162489.9%0248
Manitowoc13,7092471.8%00
Waupaca10,2992412.3%4639
Ashland1,43223916.7%2390
Waukesha53,6972140.4%0119
Juneau2,6272037.7%10598
Iowa1,26520115.9%054
Richland1,20519516.2%0195
Milwaukee95,5851810.2%00
Monroe3,8351614.2%800
Sheboygan16,5621570.9%00
Lafayette71215722.1%00
Forest1,3731319.5%10427
Washington19,8231020.5%00
Calumet7,1391001.4%00
Fond du Lac16,318900.6%00
Buffalo1,131696.1%690
Kewaunee3,461641.8%00
Racine24,623630.3%00
Ozaukee11,927210.2%00
St. Croix1,64500.0%00
Florence71400.0%00
Menominee50500.0%00
Wisconsin, 72 counties652,81958,4759.0%17,91414,972

Download this table (CSV, CC BY 4.0) · cells under 11 members are suppressed by CMS and count as zero, so every count is a floor.

Wisconsin against the nation

MeasureWisconsinUnited States
Must pick a new plan for 202758,4753,153,512
Share of members9.0%10.6%
Share for 202610.4%10.1%

National figures: the Vlada report 3.15 million Medicare Advantage members must pick a new plan for 2027.

Star Ratings 2027, member-weighted

Measure20272026Change
Members in contracts rated 4+ stars80.7%73.4%+7.3 pts
Member-weighted average star3.934.08-0.15
Rated contracts26

Members by star, 2027: 4.5: 104,787 · 4.0: 502,527 · 3.5: 83,493 · 3.0: 62,197; 24,195 in unrated contracts. CMS Star Ratings released 2026-10-08, each contract's overall star weighted by its 2026-10 members in Wisconsin (individual and group); rating year 2027 pays in 2028.

By company, 2027

CMS parent organizations with members in Wisconsin in September 2026: members whose plan is not sold in their county for 2027, as a share of the company's own members; how the plan went (terminated, or its service area reduced so it continues elsewhere but not in their county); of those members, how many the company offers a new or renumbered plan of the same type in the county, and how many are left with no plan from the company there.

CompanyMembersMust pickShare of own membersPlan terminatedService area reducedOffered a new or renumbered planCompany gone
Sanford Health78,99725,65732.5%19,4976,16017,6967,270
UnitedHealth Group, Inc.215,44925,15611.7%11,09614,06001,121
Aspirus, Inc.5,9385,938100.0%5,938005,938
Humana Inc.108,6479590.9%3236362180
Centene Corporation12,6627656.0%07650643
Network Health, Inc.130,92800.0%0000
CVS Health Corporation30,55000.0%0000
Elevance Health, Inc.30,43600.0%0000
University of Wisconsin Hospitals and Clincs Autho18,64800.0%0000
Medica Holding Company11,48900.0%0000
HealthPartners, Inc.4,97800.0%0000
Molina Healthcare, Inc.2,70000.0%0000
Group Health Cooperative of Eau Claire1,14900.0%0000
CareSource24800.0%0000

Sources

  • CMS Medicare Advantage/Part D Landscape, plan year 2027: landscape_cy2027-landscape-202609-1.zip (CMS, September 2026).
  • CMS plan crosswalk, CY2027; CMS monthly enrollment by contract, plan and county, 2026-09.
  • CMS Star Ratings 2027, released 2026-10-08.
  • Page object written 2026-10-19; the series 2016 to 2027 from the locked exits history of the Vlada report (independent audit 2026-10-13).

Receipts: athena(table=medicare_semantic.exits_cells_county_2027_v1, block=counties) bce72deb8c12…; athena(table=medicare_semantic.exits_cells_county_2027_v1, block=companies) 15de170f7bb5…; get_stars_rollup(group_by=state, limit=60) 2c1fa6b01add…; file(path=docs/research/plan-exits-2027/data/audited/by_year_state.csv) b2f25ce9152e…. Suppressed cells (under 11 members) count as zero in every count.

Cite: Vlada Health (2026). Medicare Advantage plan exits 2027 in Wisconsin, by county. https://www.vladahealth.com/medicare-advantage/wi. Data: CC BY 4.0.

Method

  • Population: members of individual Medicare Advantage plans (H and R contracts, plans 001 to 799, special needs plans included; employer group, Cost, MMP and PACE excluded) in the county in September 2026.
  • Must pick: the CMS crosswalk names no successor plan sold in the member's county for 2027; members CMS moves to a successor in their county are not counted.
  • Company: CMS's reported parent organization in September 2026; a company's share is over its own members in the state.
  • Stars: each contract's overall star weighted by its members in Wisconsin; unrated contracts counted apart, never as zero stars.
  • Suppression: CMS hides cells under 11 members; they count as zero, so every count is a floor and every share is not.

The full method, with the national tables: How we counted, and how to check it.

Questions

How many Medicare Advantage members in Wisconsin must pick a new plan for 2027?
58,475 of 652,819 members (9.0%): their plan is not sold in their county for 2027 according to the CMS crosswalk and Landscape. Nationally the share is 10.6% (3,153,512 members).
Which Wisconsin county has the most members who must pick?
Kenosha County: 4,608 of 14,948 members (30.8%). 0 of the 72 counties lose 90% or more of their members' plans; 3 lose none.
Which company ended the most plans in Wisconsin for 2027?
Sanford Health: 25,657 of its 78,997 Wisconsin members (32.5%) are in a plan it does not sell in their county for 2027.
How did Wisconsin's Star Ratings change for 2027?
80.7% of members are in contracts rated 4 stars or more for 2027, against 73.4% the year before; the member-weighted average star is 3.93, from 4.08, over 26 rated contracts.
How does 2027 compare with 2026 in Wisconsin?
67,768 members (10.4%) had to pick a new plan for 2026; for 2027 it is 58,475 (9.0%), a change of -9,293 members.

Ask this in Claude or ChatGPT

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Use Vlada. Which Wisconsin counties have the most Medicare Advantage members who must pick a new plan for 2027? Give me a table with the members in the market, the members who lose their plan and the share, then the source file, the data vintage and the response hash.

Behind it: get_landscape_exits (transition_year 2026, group_by county, state WI) and get_stars_rollup (group_by state).