Free tool · public CMS data
Massachusetts Medicare Advantage market share
In September 2026, 533,013 Massachusetts Medicare beneficiaries were enrolled in a Medicare Advantage plan across 93 parent carriers and 14 counties, led by Point32Health, Inc. with 23.3% of counted enrollment.
Data month
September 2026
Advantage enrollees
533,013
+8.6% vs September 2025
Parent carriers
93
Advantage penetration
35.4%
CMS Medicare Monthly Enrollment, 2024
Carriers in Massachusetts
CMS Monthly Enrollment by Contract/Plan/State/County (CPSC) · September 2026
| # | Parent organisation | Enrollees | Share | Counties | vs September 2025 |
|---|---|---|---|---|---|
| 1 | Point32Health, Inc. | 124,456 | 23.3% | 14 | -1.5% |
| 2 | UnitedHealth Group, Inc. | 111,492 | 20.9% | 14 | -5.3% |
| 3 | Blue Cross and Blue Shield of Massachusetts, Inc. | 86,733 | 16.3% | 14 | -11.6% |
| 4 | CVS Health Corporation | 69,010 | 12.9% | 14 | +8.3% |
| 5 | CareSource | 44,655 | 8.4% | 13 | +169.0% |
| 6 | Fallon Community Health Plan, Inc. | 21,777 | 4.1% | 14 | +1.9% |
| 7 | Mass General Brigham Incorporated | 21,143 | 4.0% | 14 | +175.1% |
| 8 | Baystate Health, Inc. | 14,896 | 2.8% | 14 | +16.7% |
| 9 | Humana Inc. | 10,783 | 2.0% | 14 | +48.0% |
| 10 | Molina Healthcare, Inc. | 10,422 | 2.0% | 11 | +2.2% |
| 11 | Central Mass Health Holding LLC | 7,758 | 1.5% | 4 | +106.7% |
| 12 | Eternal Health of Delaware, Inc. | 7,533 | 1.4% | 10 | +294.8% |
| 13 | Elevance Health, Inc. | 1,354 | 0.3% | 14 | +6.3% |
| 14 | Blue Cross & Blue Shield of Rhode Island | 359 | 0.1% | 14 | -4.5% |
| 15 | Highmark Health | 211 | 0.0% | 14 | +5.5% |
| 16 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 178 | 0.0% | 14 | -43.5% |
| 17 | Health Care Service Corporation | 171 | 0.0% | 14 | +584.0% |
| 18 | NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND | 68 | 0.0% | 8 | — |
| 19 | Lifetime Healthcare, Inc. | 14 | 0.0% | 14 | +16.7% |
| 20 | Alignment Healthcare USA, LLC | 0 | 0.0% | 14 | — |
| 21 | Allina Health and Aetna Insurance Holding Company | 0 | 0.0% | 14 | — |
| 22 | AlohaCare | 0 | 0.0% | 1 | — |
| 23 | Astiva Health Holdings Incorporated | 0 | 0.0% | 1 | — |
| 24 | Athena Healthcare Holdings, LLC | 0 | 0.0% | 5 | — |
| 25 | Aultman Health Foundation | 0 | 0.0% | 14 | — |
| 26 | Aware Integrated, Inc. | 0 | 0.0% | 14 | — |
| 27 | BayCare Health System, Inc. | 0 | 0.0% | 1 | — |
| 28 | Baylor Scott & White Health | 0 | 0.0% | 1 | — |
| 29 | Blue Cross Blue Shield of Kansas | 0 | 0.0% | 14 | — |
| 30 | Blue Cross Blue Shield of Nebraska | 0 | 0.0% | 14 | — |
| 31 | BlueCross BlueShield of Alabama | 0 | 0.0% | 14 | — |
| 32 | BlueCross BlueShield of South Carolina (BCBSSC) | 0 | 0.0% | 14 | — |
| 33 | BlueCross BlueShield of Tennessee | 0 | 0.0% | 14 | — |
| 34 | BMC Health System, Inc. | 0 | 0.0% | 3 | -100.0% |
| 35 | California Physicians' Service | 0 | 0.0% | 14 | — |
| 36 | Cambia Health Solutions, Inc. | 0 | 0.0% | 14 | — |
| 37 | CAPITAL BLUE CROSS | 0 | 0.0% | 14 | — |
| 38 | CareFirst, Inc. | 0 | 0.0% | 14 | — |
| 39 | Centene Corporation | 0 | 0.0% | 11 | — |
| 40 | Chapters CareNu Inc | 0 | 0.0% | 2 | — |
| 41 | Clover Health Holdings, Inc. | 0 | 0.0% | 4 | — |
| 42 | Corewell Health | 0 | 0.0% | 14 | — |
| 43 | CuraCor Solutions Corp. | 0 | 0.0% | 14 | — |
| 44 | Devoted Health, Inc. | 0 | 0.0% | 5 | — |
| 45 | Elderplan, Inc. | 0 | 0.0% | 4 | — |
| 46 | EmblemHealth, Inc. | 0 | 0.0% | 14 | — |
| 47 | Fenyx Health Holdings, Inc. | 0 | 0.0% | 14 | — |
| 48 | General Catalyst Group Management Holdings LP | 0 | 0.0% | 14 | — |
| 49 | Guidewell Mutual Holding Corporation | 0 | 0.0% | 14 | — |
| 50 | Harris County Hospital District | 0 | 0.0% | 1 | — |
| 51 | Hawaii Medical Service Association | 0 | 0.0% | 14 | — |
| 52 | Health First Shared Services, Inc. | 0 | 0.0% | 2 | — |
| 53 | Healthfirst, Inc. | 0 | 0.0% | 14 | — |
| 54 | HealthPartners, Inc. | 0 | 0.0% | 14 | — |
| 55 | Henry Ford Health System | 0 | 0.0% | 14 | — |
| 56 | Horizon Mutual Holdings, Inc | 0 | 0.0% | 14 | — |
| 57 | Imperial Health Plan of California | 0 | 0.0% | 2 | — |
| 58 | Independence Health Group, Inc. | 0 | 0.0% | 14 | — |
| 59 | Independent Health Association, Inc. | 0 | 0.0% | 14 | — |
| 60 | Johns Hopkins Healthcare LLC | 0 | 0.0% | 1 | — |
| 61 | Kaiser Foundation Health Plan, Inc. | 0 | 0.0% | 9 | — |
| 62 | LifeBridge Health, Inc. | 0 | 0.0% | 1 | — |
| 63 | LMC Family Holdings, LLC | 0 | 0.0% | 1 | — |
| 64 | Local Initiative Health Authority for LA County | 0 | 0.0% | 1 | — |
| 65 | Longevity Health Founders, LLC | 0 | 0.0% | 3 | — |
| 66 | Louisiana Health Service & Indemnity Company | 0 | 0.0% | 14 | — |
| 67 | Martin's Point Health Care, Inc. | 0 | 0.0% | 14 | — |
| 68 | Medica Holding Company | 0 | 0.0% | 14 | — |
| 69 | MEDICAL MUTUAL OF OHIO | 0 | 0.0% | 14 | — |
| 70 | Memorial Hermann Health System | 0 | 0.0% | 2 | — |
| 71 | MHH Healthcare, L.P. | 0 | 0.0% | 7 | — |
| 72 | MVP Health Care, Inc. | 0 | 0.0% | 14 | — |
| 73 | Network Health, Inc. | 0 | 0.0% | 14 | — |
| 74 | PacificSource | 0 | 0.0% | 1 | — |
| 75 | Presbyterian Healthcare Services | 0 | 0.0% | 1 | — |
| 76 | Risant Health, Inc. | 0 | 0.0% | 1 | — |
| 77 | Sanford Health | 0 | 0.0% | 1 | — |
| 78 | SANTA CLARA COUNTY HEALTH AUTHORITY | 0 | 0.0% | 1 | — |
| 79 | SCAN Group | 0 | 0.0% | 10 | — |
| 80 | Sentara Health Care (SHC) | 0 | 0.0% | 1 | — |
| 81 | Sharp Healthcare | 0 | 0.0% | 2 | — |
| 82 | SIHO Holding, Inc. | 0 | 0.0% | 1 | — |
| 83 | The Health Plan of West Virginia, Inc. | 0 | 0.0% | 14 | — |
| 84 | The Regents of the University of California | 0 | 0.0% | 2 | — |
| 85 | Thomas Jefferson University | 0 | 0.0% | 4 | — |
| 86 | Trinity Health Corporation | 0 | 0.0% | 4 | — |
| 87 | Ultimate Healthcare Holdings, LLC | 0 | 0.0% | 1 | — |
| 88 | Universal Health Services, Inc. | 0 | 0.0% | 1 | — |
| 89 | University of Wisconsin Hospitals and Clincs Autho | 0 | 0.0% | 1 | — |
| 90 | UPMC Health System | 0 | 0.0% | 14 | — |
| 91 | USAble Mutual Insurance Company | 0 | 0.0% | 14 | — |
| 92 | Village Care of New York, Inc. | 0 | 0.0% | 1 | — |
| 93 | Visiting Nurse Service of New York | 0 | 0.0% | 2 | — |
County view
Leading carrier and Advantage enrollment in each Massachusetts county. Penetration is from CMS Medicare Monthly Enrollment, 2024.
| County | Advantage enrollees | Leading carrier | Leader share | Carriers | Penetration |
|---|---|---|---|---|---|
| Middlesex | 103,987 | Point32Health, Inc. | 39.6% | 76 | 34.0% |
| Worcester | 79,773 | CVS Health Corporation | 19.5% | 68 | 43.6% |
| Essex | 63,636 | UnitedHealth Group, Inc. | 30.3% | 65 | 34.8% |
| Bristol | 52,734 | UnitedHealth Group, Inc. | 24.5% | 58 | 38.1% |
| Hampden | 48,899 | CareSource | 27.6% | 59 | 45.1% |
| Norfolk | 48,852 | Point32Health, Inc. | 29.2% | 63 | 32.0% |
| Suffolk | 46,909 | UnitedHealth Group, Inc. | 30.4% | 61 | 42.2% |
| Plymouth | 41,982 | UnitedHealth Group, Inc. | 22.2% | 62 | 31.0% |
| Barnstable | 21,057 | Blue Cross and Blue Shield of Massachusetts, Inc. | 39.7% | 58 | 25.0% |
| Hampshire | 11,621 | Blue Cross and Blue Shield of Massachusetts, Inc. | 37.0% | 55 | 30.8% |
| Franklin | 6,758 | Blue Cross and Blue Shield of Massachusetts, Inc. | 40.5% | 52 | 32.7% |
| Berkshire | 6,292 | Baystate Health, Inc. | 49.3% | 57 | 18.7% |
| Dukes | 401 | Mass General Brigham Incorporated | 58.9% | 52 | 7.3% |
| Nantucket | 112 | Mass General Brigham Incorporated | 76.8% | 49 | 5.9% |
What is missing
CMS suppresses any plan-county cell with fewer than 11 enrollees. Those enrollees are missing from these counts, so every figure is a floor, not an exact total.
What is counted
Counts cover Medicare Advantage contracts only (Local CCP, Regional CCP, PFFS and MSA). Standalone Part D drug plans, cost plans, HCPP and PACE contracts are excluded.
Source: CMS Monthly Enrollment by Contract/Plan/State/County (CPSC).