Trinity Health Corporation in Idaho: 22,888 Medicare Advantage members, 12.8% share, 3rd of 7.
Trinity Health Corporation added 19,017 members (+491.3%) from Nov 2025 to Oct 2026 and stepped +402.6% at the 2026 election period against the market's −14.7%. It sells in 10 of Idaho’s 44 counties with visible members and leads 2; Gemstone Holdings, Inc. sits just ahead at 20.2%, PacificSource just behind at 9.6%.
Trinity Health Corporation's twelve months in Idaho
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 Idaho page.
Where Trinity Health Corporation's Idaho 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 10 counties and leads 2 of them.
| County | Trinity Health Corporation members | Share of county | County visible members | County leader |
|---|---|---|---|---|
| Ada | 11,267 | 20.1% | 56,040 | UnitedHealth |
| Canyon | 7,991 | 26.7% | 29,972 | UnitedHealth |
| Gem | 922 | 27.2% | 3,394 | Gemstone Holdings, Inc. |
| Payette | 832 | 23.3% | 3,570 | Gemstone Holdings, Inc. |
| Washington | 545 | 33.3% | 1,637 | Trinity Health Corporation |
Trinity Health Corporation against the Idaho 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 74.9%
market 3.61
market 72%
market $7,000
| # | Carrier | Members | Share | Twelve months | Election step | Counties led | Rating | $0 premium |
|---|---|---|---|---|---|---|---|---|
| 1 | UnitedHealth | 74,701 | 41.9% | +6.0% | +0.5% | 29 of 43 | 4.03 | 95% |
| 2 | Gemstone Holdings, Inc. | 36,083 | 20.2% | −53.2% | −56.9% | 4 of 24 | 3.00 | 11% |
| 3 | Trinity Health Corporation | 22,888 | 12.8% | +491.3% | +402.6% | 2 of 10 | – | – |
| 4 | PacificSource | 17,057 | 9.6% | +76.0% | +45.8% | 6 of 15 | 3.00 | – |
| 5 | Humana | 14,671 | 8.2% | +62.7% | +30.6% | 0 of 29 | 4.24 | 100% |
| 6 | Molina | 12,819 | 7.2% | −8.3% | −5.1% | 0 of 39 | 3.00 | 100% |
What 2027 does to Trinity Health Corporation's plans in Idaho
The fate assigned to each of the carrier’s plans for 2027, joined to the members in it today.
Trinity Health Corporation ends every plan in Idaho for 2027. Its 22,888 members there must choose another plan or return to Original Medicare.
The read on Trinity Health Corporation in Idaho 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.
Trinity Health Corporation elsewhere, and the rest of Idaho
- UnitedHealth41.9%
- Gemstone Holdings, Inc.20.2%
- PacificSource9.6%
- Humana8.2%
- Molina7.2%
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.
- Trinity Health Corporation is the parent organization Trinity Health Corporation; its 4 plans in Idaho may sell under other brand names. The rating is the 2027 overall Star Rating of its contracts weighted by members in Idaho; $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.