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    FreeTwo 2027 reports
    Medicare Advantage · Ohio · enrollment Oct 2026

    Medicare Advantage in Ohio: 1,220,976 members, 19 carriers, UnitedHealth in front.

    UnitedHealth holds 22.2% of Ohio’s visible Medicare Advantage members, ahead of Elevance at 17.5% and Humana at 16.2%. The market grew +7.0% (+79,426 members) from Nov 2025 to Oct 2026 and stepped +3.5% at the 2026 election period. 56.7% of the state's Medicare beneficiaries are in a Medicare Advantage plan.

    Visible members
    1,220,976
    Oct 2026
    Carriers
    19
    185 plans with members
    MA penetration
    56.7%
    of 2,647,377 eligible
    Twelve months
    +7.0%
    +79,426 members
    Election step
    +3.5%
    December to January 2026
    Top three
    55.8%
    HHI 1,414, unconcentrated

    Every carrier with members in Ohio

    Ranked by visible members in Oct 2026. The twelve-month change runs Nov 2025 to Oct 2026; the election step is the carrier’s own December-to-January change. Counties led counts counties where the carrier has the most visible members and at least one other carrier is visible. Humana leads 24 of the 88 counties with a lead. At the election period Molina stepped up most (+984.9%) and Elevance stepped down most (−24.8%).

    #CarrierMembersShareTwelve monthsElection stepCounties ledRating$0 premiumPlans
    1UnitedHealth270,884
    22.2%
    		+1.0%−2.1%19 of 883.9998%28
    2Elevance213,168
    17.5%
    		−31.6%−24.8%11 of 883.6398%12
    3Humana197,328
    16.2%
    		+13.9%+11.4%24 of 884.1289%29
    4Aetna (CVS)187,494
    15.4%
    		+35.2%+20.8%20 of 883.70100%28
    5MEDICAL MUTUAL OF OHIO82,958
    6.8%
    		−13.7%−16.4%4 of 383.6271%12
    6Devoted65,569
    5.4%
    		+90.2%+69.5%2 of 724.0999%19
    7Trinity Health Corporation55,061
    4.5%
    		+37.2%+32.1%6 of 533.4976%9
    8CareSource38,483
    3.1%
    		+356.8%+207.7%0 of 853.50100%1
    9General Catalyst Group Management Holdings LP33,966
    2.8%
    		––0 of 264.0027%7
    10Health Care Service Corporation18,665
    1.5%
    		+122.6%+87.2%0 of 232.5296%8
    11Molina15,188
    1.2%
    		+1399.3%+984.9%0 of 533.00100%2
    12Centene14,504
    1.2%
    		+20.0%+47.8%0 of 793.50100%7
    13Aultman Health Foundation14,025
    1.1%
    		+2.3%+3.3%2 of 104.5046%4
    14The Health Plan of West Virginia, Inc.5,913
    0.5%
    		+43.0%+33.0%0 of 463.214%7
    15Zing Health Consolidator, Inc2,496
    0.2%
    		+130.7%+37.4%0 of 83.50100%5
    16The Schroer Group, Inc.2,341
    0.2%
    		+16.2%+0.1%0 of 523.50100%1
    17SNP Holdings, LLC1,458
    0.1%
    		+1.2%−0.5%0 of 10–100%1
    18Perennial Consortium, LLC1,399
    0.1%
    		+135.1%+96.9%0 of 27–100%2
    19UPMC Health System76
    0.0%
    		+2.7%−2.7%0 of 14.5025%3

    Ohio county by county

    88 counties with visible members, largest first. A county’s leader is the carrier with the most visible members there; a county with one visible carrier shows no leader, because the others are suppressed, not absent. Penetration is Medicare Advantage members as a share of the county’s Medicare beneficiaries.

    CountyVisible membersCarriersLeaderLeader shareMA penetrationDual eligibles
    Cuyahoga137,73316UnitedHealth26.9%57.9%55,606
    Franklin99,72212Humana23.5%56.3%36,932
    Hamilton77,08014Humana27.9%56.8%27,849
    Summit68,88917UnitedHealth23.3%63.0%21,055
    Montgomery65,25215Elevance30.7%61.3%20,362
    Stark55,55216UnitedHealth22.5%69.0%13,828
    Lucas43,92114MEDICAL MUTUAL OF OHIO26.5%58.1%18,254
    Butler36,09213UnitedHealth24.5%55.5%10,817
    Lorain34,23215UnitedHealth20.3%58.1%9,469
    Mahoning32,80416UnitedHealth27.2%64.7%11,985
    Trumbull28,46815UnitedHealth23.5%62.8%8,467
    Lake28,45313Elevance24.1%55.2%5,788
    Clermont23,84813Humana28.8%59.0%5,329
    Warren20,75013Elevance26.3%52.6%3,896
    Portage19,60515UnitedHealth20.7%64.1%4,469
    Medina19,19915Elevance18.6%55.9%3,465
    Licking18,95713Trinity Health Corporation25.2%55.6%4,878
    Fairfield15,98113Trinity Health Corporation30.8%57.9%4,119
    Greene15,64612Elevance31.7%49.7%4,129
    Delaware15,47812Aetna (CVS)31.0%47.5%3,237
    Clark15,19413UnitedHealth29.4%60.7%5,227
    Columbiana14,20512UnitedHealth24.0%61.7%4,316
    Richland13,13110UnitedHealth29.9%54.1%5,081
    Miami12,34912Elevance33.1%54.8%3,161
    Tuscarawas12,24511Elevance29.8%64.3%3,427
    Wayne12,20413Humana18.7%56.5%3,224
    Ashtabula12,01810UnitedHealth43.7%54.6%4,892
    Wood10,71813MEDICAL MUTUAL OF OHIO26.6%52.0%2,857
    Muskingum10,52810Aetna (CVS)47.8%58.1%4,878
    Geauga9,47613Elevance25.2%48.6%1,566
    Allen8,89912Humana21.2%50.7%3,993
    Ross8,84712Trinity Health Corporation27.9%56.5%3,301
    Marion7,7728Humana27.1%59.2%2,823
    Scioto7,0478Humana33.6%51.8%4,271
    Belmont6,9567Aetna (CVS)28.9%57.7%2,983
    Erie6,84812Devoted19.2%51.3%2,713
    Knox6,8238Humana36.5%55.1%1,993
    Hancock6,54310Aetna (CVS)50.2%46.4%2,035
    Jefferson6,2059Aetna (CVS)39.3%53.4%2,774
    Pickaway6,20211Trinity Health Corporation25.3%58.4%1,707
    Ashland5,97612Humana23.1%57.3%1,552
    Sandusky5,8229Aetna (CVS)21.3%47.8%1,928
    Brown5,63712Humana25.9%61.9%1,869
    Lawrence5,5598Humana32.9%50.3%3,291
    Washington5,4818Humana28.0%46.6%2,685
    Huron5,4248Devoted28.0%51.8%2,028
    Highland5,04111UnitedHealth27.2%57.4%1,999
    Ottawa4,85711MEDICAL MUTUAL OF OHIO36.0%52.1%1,220
    Clinton4,85510Elevance30.6%56.6%1,506
    Preble4,85511UnitedHealth35.7%56.1%1,323
    Union4,7879Humana29.5%50.8%1,020
    Crawford4,75311Aetna (CVS)28.2%50.7%1,956
    Madison4,61711Humana22.7%59.6%1,180
    Seneca4,60210Aetna (CVS)36.9%42.6%2,092
    Darke4,44311UnitedHealth36.1%42.9%1,420
    Guernsey4,42210Aetna (CVS)47.9%55.2%1,809
    Logan4,3699Humana33.0%47.4%1,477
    Athens4,3319Humana32.8%52.8%2,318
    Perry4,09611Trinity Health Corporation28.7%58.1%1,662
    Fulton3,9399MEDICAL MUTUAL OF OHIO31.8%51.4%1,072
    Carroll3,80611Aultman Health Foundation23.9%62.9%965
    Champaign3,74211UnitedHealth25.7%57.0%1,251
    Coshocton3,74111UnitedHealth43.5%53.0%1,643
    Morrow3,67210Humana31.8%53.2%1,033
    Williams3,5066Aetna (CVS)35.0%46.1%1,171
    Jackson3,48610Humana31.3%54.1%1,781
    Adams3,4078Elevance31.2%60.6%1,862
    Shelby3,2679UnitedHealth27.1%38.2%1,197
    Fayette3,07310Trinity Health Corporation27.4%53.8%1,258
    Defiance3,0718Aetna (CVS)47.6%51.5%1,262
    Hocking2,97311Elevance23.1%54.0%1,183
    Pike2,86910UnitedHealth31.8%51.1%1,385
    Gallia2,8027Humana33.5%54.0%1,633
    Auglaize2,7348Humana27.1%39.5%1,103
    Hardin2,6118Aetna (CVS)25.7%51.3%939
    Holmes2,35610Aultman Health Foundation28.2%51.5%573
    Meigs2,1657Humana34.0%57.1%1,151
    Van Wert2,1328Humana30.2%46.9%810
    Henry2,1148Aetna (CVS)49.9%45.7%695
    Mercer2,0808Aetna (CVS)37.3%32.2%1,020
    Wyandot2,0179Aetna (CVS)38.7%45.3%784
    Putnam1,7378Aetna (CVS)26.7%37.7%794
    Harrison1,7108Aetna (CVS)34.7%58.3%669
    Morgan1,5227Aetna (CVS)32.5%61.3%665
    Vinton1,2488Humana25.2%58.7%645
    Paulding1,2257Aetna (CVS)36.4%49.5%548
    Monroe1,1526Humana33.2%55.2%518
    Noble1,0207Aetna (CVS)38.5%50.0%383

    Ohio's twelve months

    Visible Medicare Advantage members in Ohio each month, Nov 2025 to Oct 2026. The December-to-January step is the election period; the rest of the year moves on new eligibles, special enrollment and deaths.

    Nov 2025 · 1,141,550Oct 2026 · 1,220,976

    What 2027 does to Ohio

    The fate assigned to every plan for 2027, joined to the members in it today. A plan that ends sends its members to choose again; a plan dropping counties keeps the plan but not every county, and which counties is not stated.

    Plans that end
    170,529

    members in Ohio are in plans that end for 2027.

    • UnitedHealth90,254
    • Aetna (CVS)28,391
    • Humana27,136
    • Devoted7,909
    • Centene7,414
    • MEDICAL MUTUAL OF OHIO4,115
    • General Catalyst Group Management Holdings LP3,370
    • Trinity Health Corporation1,890
    Plans dropping counties
    199,958

    members are in plans that keep selling in Ohio but drop at least one county for 2027.

    • UnitedHealth · 9 plans109,123
    • Humana · 3 plans26,634
    • Aetna (CVS) · 2 plans19,103
    • MEDICAL MUTUAL OF OHIO · 4 plans14,462
    • Trinity Health Corporation · 2 plans14,030
    • Aultman Health Foundation · 4 plans14,025
    • SNP Holdings, LLC · 1 plans1,458
    • Perennial Consortium, LLC · 1 plans974

    The plans on sale in Ohio for 2027

    Benefit design weighted by each plan’s members today, so a figure is what the market’s members are offered, not a count of plans. The rating is the 2027 overall Star Rating, weighted the same way.

    $0 premium
    92%

    of members are in a plan with no monthly premium

    In-network maximum
    $6,500

    median out-of-pocket maximum, member weighted

    Star Rating
    3.81

    2027 overall, member weighted

    Carrier Command · for Medicare Advantage plans

    The read on every carrier in Ohio is in Carrier Command.

    A monthly position page for each of the 19 carriers here: risk and rebate against the market, Stars levers, the election-period forecast, county standing and the written read. Launching for Medicare Advantage plans.

    Request early access See Carrier Command

    Other states

    Every state has its own page; the largest carriers have one nationally.

    UnitedHealth in every state · Elevance in every state · Humana in every state · All states and carriers

    How these numbers are made

    • Members are visible members: CMS suppresses any plan-county cell of ten or fewer, so small counties undercount. Market share excludes employer group plans.
    • Enrollment is Oct 2026; the twelve months run Nov 2025 to Oct 2026; the election step compares December 2025 with January 2026.
    • Plan fates are the ones assigned for contract year 2027; benefit design is the 2027 filing; the rating is the 2027 overall Star Rating of each carrier's contracts, weighted by members in Ohio.
    • A carrier is a parent organization; its brands in Ohio may carry other names. The rank 1st to 19th counts every parent with visible members in 2026.
    • Every figure comes from public CMS data as Livmor reads it, and the page is rebuilt when a new month posts. Livmor Carrier Command, public CMS data.