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    Medicare Advantage · Massachusetts · enrollment Oct 2026

    Medicare Advantage in Massachusetts: 484,467 members, 13 carriers, Point32Health, Inc. in front.

    Point32Health, Inc. holds 24.0% of Massachusetts’s visible Medicare Advantage members, ahead of UnitedHealth at 19.4% and Blue Cross and Blue Shield of Massachusetts, Inc. at 17.3%. The market grew +10.4% (+45,556 members) from Nov 2025 to Oct 2026 and stepped +5.5% at the 2026 election period. 35.6% of the state's Medicare beneficiaries are in a Medicare Advantage plan.

    Visible members
    484,467
    Oct 2026
    Carriers
    13
    81 plans with members
    MA penetration
    35.6%
    of 1,527,562 eligible
    Twelve months
    +10.4%
    +45,556 members
    Election step
    +5.5%
    December to January 2026
    Top three
    60.7%
    HHI 1,519, moderately concentrated

    Every carrier with members in Massachusetts

    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. Blue Cross and Blue Shield of Massachusetts, Inc. leads 4 of the 13 counties with a lead. At the election period Eternal Health of Delaware, Inc. stepped up most (+183.5%) and Blue Cross and Blue Shield of Massachusetts, Inc. stepped down most (−22.3%).

    #CarrierMembersShareTwelve monthsElection stepCounties ledRating$0 premiumPlans
    1Point32Health, Inc.116,339
    24.0%
    −1.4%−3.0%3 of 103.9235%19
    2UnitedHealth94,148
    19.4%
    −3.4%−0.7%3 of 113.8776%13
    3Blue Cross and Blue Shield of Massachusetts, Inc.83,706
    17.3%
    −13.0%−22.3%4 of 114.2569%7
    4Aetna (CVS)53,152
    11.0%
    +16.2%+7.5%0 of 93.79100%7
    5CareSource44,731
    9.2%
    +163.2%+160.2%1 of 124.50100%2
    6Mass General Brigham Incorporated21,342
    4.4%
    +167.2%+112.8%1 of 103.5033%6
    7Fallon Community Health Plan, Inc.21,194
    4.4%
    +2.3%−0.2%0 of 123.7673%5
    8Baystate Health, Inc.14,537
    3.0%
    +17.8%+10.0%1 of 43.0038%6
    9Molina10,444
    2.2%
    +0.6%+1.8%0 of 84.50100%3
    10Humana9,372
    1.9%
    +42.2%+36.5%0 of 64.03100%5
    11Central Mass Health Holding LLCends every plan for 20277,771
    1.6%
    +103.8%+74.2%0 of 1––4
    12Eternal Health of Delaware, Inc.7,663
    1.6%
    +298.9%+183.5%0 of 62.50100%3
    13NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND68
    0.0%
    ––0 of 1–100%1

    Massachusetts county by county

    14 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
    Middlesex94,3129Point32Health, Inc.40.4%34.1%61,332
    Worcester73,00711Blue Cross and Blue Shield of Massachusetts, Inc.19.8%44.0%46,171
    Essex58,1269UnitedHealth28.3%35.4%45,417
    Bristol47,29411UnitedHealth24.1%39.2%41,128
    Hampden46,0109CareSource29.3%45.3%37,699
    Suffolk44,92510UnitedHealth29.5%41.9%49,853
    Norfolk43,8669Point32Health, Inc.30.5%32.0%30,665
    Plymouth37,0019Point32Health, Inc.23.9%31.8%25,671
    Barnstable16,9516Blue Cross and Blue Shield of Massachusetts, Inc.48.8%24.1%10,646
    Hampshire10,6007Blue Cross and Blue Shield of Massachusetts, Inc.40.1%29.7%7,707
    Franklin6,4215Blue Cross and Blue Shield of Massachusetts, Inc.42.3%32.3%5,239
    Berkshire5,5763Baystate Health, Inc.55.6%16.8%10,230
    Dukes2932Mass General Brigham Incorporated81.9%8.7%707
    Nantucket851one visible carrier–6.2%198

    Massachusetts's twelve months

    Visible Medicare Advantage members in Massachusetts 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 · 438,911Oct 2026 · 484,467

    What 2027 does to Massachusetts

    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
    29,769

    members in Massachusetts are in plans that end for 2027; Central Mass Health Holding LLC ends every plan in the state.

    • Mass General Brigham Incorporated18,219
    • Central Mass Health Holding LLC · every plan7,771
    • Point32Health, Inc.2,034
    • UnitedHealth900
    • Humana845
    Plans dropping counties
    106,290

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

    • Blue Cross and Blue Shield of Massachusetts, Inc. · 5 plans78,858
    • Baystate Health, Inc. · 2 plans10,293
    • Fallon Community Health Plan, Inc. · 2 plans9,545
    • Humana · 2 plans6,401
    • Aetna (CVS) · 1 plans1,193

    The plans on sale in Massachusetts 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
    74%

    of members are in a plan with no monthly premium

    In-network maximum
    $7,150

    median out-of-pocket maximum, member weighted

    Star Rating
    3.95

    2027 overall, member weighted

    Carrier Command · for Medicare Advantage plans

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

    A monthly position page for each of the 13 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.

    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 Massachusetts.
    • A carrier is a parent organization; its brands in Massachusetts may carry other names. The rank 1st to 13th 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.