Blue Cross Blue Shield of Michigan Mutual Ins. Co. in Michigan: 154,667 Medicare Advantage members, 16.0% share, 3rd of 16.
Blue Cross Blue Shield of Michigan Mutual Ins. Co. lost 66,594 members (−30.1%) from Nov 2025 to Oct 2026 and stepped −28.4% at the 2026 election period against the market's +3.0%. It sells in 83 of Michigan’s 83 counties with visible members and leads 4; Humana sits just ahead at 22.4%, Henry Ford Health System just behind at 11.1%.
Blue Cross Blue Shield of Michigan Mutual Ins. Co.'s twelve months in Michigan
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 Michigan page.
Where Blue Cross Blue Shield of Michigan Mutual Ins. Co.'s Michigan 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 83 counties and leads 4 of them.
| County | Blue Cross Blue Shield of Michigan Mutual Ins. Co. members | Share of county | County visible members | County leader |
|---|---|---|---|---|
| Oakland | 25,695 | 25.6% | 100,533 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. |
| Wayne | 23,394 | 14.8% | 158,629 | Humana |
| Macomb | 16,852 | 20.9% | 80,628 | Humana |
| Genesee | 7,646 | 20.3% | 37,767 | Humana |
| Washtenaw | 5,692 | 28.8% | 19,776 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. |
Blue Cross Blue Shield of Michigan Mutual Ins. Co. against the Michigan 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 64.9%
market 4.02, +0.48, 1st of 7 rated
market 81%, −53 points
market $6,950, −$950
| # | Carrier | Members | Share | Twelve months | Election step | Counties led | Rating | $0 premium |
|---|---|---|---|---|---|---|---|---|
| 1 | Corewell Health | 257,090 | 26.6% | +13.8% | +10.5% | 35 of 68 | 4.26 | 83% |
| 2 | Humana | 216,396 | 22.4% | +23.4% | +14.4% | 42 of 83 | 4.10 | 94% |
| 3 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 154,667 | 16.0% | −30.1% | −28.4% | 4 of 83 | 4.50 | 28% |
| 4 | Henry Ford Health System | 107,561 | 11.1% | +75.8% | +56.0% | 2 of 58 | 3.80 | 92% |
| 5 | Aetna (CVS) | 88,600 | 9.2% | +11.4% | +4.9% | 0 of 69 | 3.83 | 98% |
| 6 | UnitedHealth | 63,523 | 6.6% | −13.5% | −14.1% | 0 of 63 | 3.09 | 100% |
| 7 | Centene | 29,670 | 3.1% | +11.7% | +20.9% | 0 of 47 | 3.00 | 100% |
What 2027 does to Blue Cross Blue Shield of Michigan Mutual Ins. Co.'s plans in Michigan
The fate assigned to each of the carrier’s plans for 2027, joined to the members in it today.
Every one of Blue Cross Blue Shield of Michigan Mutual Ins. Co.’s plans in Michigan renews for 2027 unchanged in status and service area.
The read on Blue Cross Blue Shield of Michigan Mutual Ins. Co. in Michigan 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 Blue Shield of Michigan Mutual Ins. Co. elsewhere, and the rest of Michigan
- Corewell Health26.6%
- Humana22.4%
- Henry Ford Health System11.1%
- Aetna (CVS)9.2%
- UnitedHealth6.6%
- Centene3.1%
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 Blue Shield of Michigan Mutual Ins. Co. is the parent organization Blue Cross Blue Shield of Michigan Mutual Ins. Co.; its 13 plans in Michigan may sell under other brand names. The rating is the 2027 overall Star Rating of its contracts weighted by members in Michigan; $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.