Blue Cross and Blue Shield of Massachusetts, Inc. in Massachusetts: 83,706 Medicare Advantage members, 17.3% share, 3rd of 13.
Blue Cross and Blue Shield of Massachusetts, Inc. lost 12,549 members (−13.0%) from Nov 2025 to Oct 2026 and stepped −22.3% at the 2026 election period against the market's +5.5%. It sells in 11 of Massachusetts’s 14 counties with visible members and leads 4; UnitedHealth sits just ahead at 19.4%, Aetna (CVS) just behind at 11.0%.
Blue Cross and Blue Shield of Massachusetts, Inc.'s twelve months in Massachusetts
Visible members each month, Nov 2025 to Oct 2026. The December-to-January step is the election period. The market line for the state is on the Massachusetts page.
Where Blue Cross and Blue Shield of Massachusetts, Inc.'s Massachusetts members are
The carrier’s five largest counties by visible members, with its share of each county’s visible Medicare Advantage members. It sells in 11 counties and leads 4 of them.
| County | Blue Cross and Blue Shield of Massachusetts, Inc. members | Share of county | County visible members | County leader |
|---|---|---|---|---|
| Worcester | 14,420 | 19.8% | 73,007 | Blue Cross and Blue Shield of Massachusetts, Inc. |
| Middlesex | 14,224 | 15.1% | 94,312 | Point32Health, Inc. |
| Hampden | 8,414 | 18.3% | 46,010 | CareSource |
| Barnstable | 8,265 | 48.8% | 16,951 | Blue Cross and Blue Shield of Massachusetts, Inc. |
| Norfolk | 8,263 | 18.8% | 43,866 | Point32Health, Inc. |
Blue Cross and Blue Shield of Massachusetts, Inc. against the Massachusetts market
The carrier’s figures beside the state’s, each weighted by members. A difference is a difference, not a grade: a higher maximum or a lower rating is a design and a result, read in context.
top three hold 60.7%
market 3.95, +0.30, 3rd of 9 rated
market 74%, −5 points
market $7,150, +$2,050
| # | Carrier | Members | Share | Twelve months | Election step | Counties led | Rating | $0 premium |
|---|---|---|---|---|---|---|---|---|
| 1 | Point32Health, Inc. | 116,339 | 24.0% | −1.4% | −3.0% | 3 of 10 | 3.92 | 35% |
| 2 | UnitedHealth | 94,148 | 19.4% | −3.4% | −0.7% | 3 of 11 | 3.87 | 76% |
| 3 | Blue Cross and Blue Shield of Massachusetts, Inc. | 83,706 | 17.3% | −13.0% | −22.3% | 4 of 11 | 4.25 | 69% |
| 4 | Aetna (CVS) | 53,152 | 11.0% | +16.2% | +7.5% | 0 of 9 | 3.79 | 100% |
| 5 | CareSource | 44,731 | 9.2% | +163.2% | +160.2% | 1 of 12 | 4.50 | 100% |
| 6 | Mass General Brigham Incorporated | 21,342 | 4.4% | +167.2% | +112.8% | 1 of 10 | 3.50 | 33% |
| 7 | Fallon Community Health Plan, Inc. | 21,194 | 4.4% | +2.3% | −0.2% | 0 of 12 | 3.76 | 73% |
| 8 | Baystate Health, Inc. | 14,537 | 3.0% | +17.8% | +10.0% | 1 of 4 | 3.00 | 38% |
| 9 | Molina | 10,444 | 2.2% | +0.6% | +1.8% | 0 of 8 | 4.50 | 100% |
What 2027 does to Blue Cross and Blue Shield of Massachusetts, Inc.'s plans in Massachusetts
The fate assigned to each of the carrier’s plans for 2027, joined to the members in it today.
78,858 members are in 5 plans that drop at least one county; which counties is not stated. In all, 94% of Blue Cross and Blue Shield of Massachusetts, Inc.’s Massachusetts members are in a plan whose service area or status changes.
The read on Blue Cross and Blue Shield of Massachusetts, Inc. in Massachusetts is in Carrier Command.
Risk and rebate against the market, the five-test read on coding versus selection, Stars levers and next year's cut points, the election-period forecast and the county-by-county standing, written as a monthly page.
Blue Cross and Blue Shield of Massachusetts, Inc. elsewhere, and the rest of Massachusetts
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.
- Blue Cross and Blue Shield of Massachusetts, Inc. is the parent organization Blue Cross and Blue Shield of Massachusetts, Inc.; its 7 plans in Massachusetts may sell under other brand names. The rating is the 2027 overall Star Rating of its contracts weighted by members in Massachusetts; $0 premium and the in-network maximum are the 2027 filings weighted by members today.
- Plan fates are the ones assigned for contract year 2027.
- 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.