Hawaii Medical Service Association in Hawaii: 31,777 Medicare Advantage members, 23.2% share, 2nd of 7.
Hawaii Medical Service Association added 1,737 members (+5.8%) from Nov 2025 to Oct 2026 and stepped −0.6% at the 2026 election period against the market's +0.1%. It sells in 4 of Hawaii’s 4 counties with visible members and leads 0; UnitedHealth sits just ahead at 36.0%, Kaiser just behind at 15.4%.
Hawaii Medical Service Association's twelve months in Hawaii
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 Hawaii page.
Where Hawaii Medical Service Association's Hawaii 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 4 counties and leads 0 of them.
| County | Hawaii Medical Service Association members | Share of county | County visible members | County leader |
|---|---|---|---|---|
| Honolulu | 20,629 | 22.9% | 90,291 | UnitedHealth |
| Hawaii | 6,695 | 29.9% | 22,361 | UnitedHealth |
| Maui | 2,974 | 18.2% | 16,342 | Kaiser |
| Kauai | 1,479 | 18.7% | 7,895 | Humana |
Hawaii Medical Service Association against the Hawaii 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 74.6%
market 3.73, −0.73, 4th of 5 rated
market 67%, −37 points
market $7,150, +$1,050
| # | Carrier | Members | Share | Twelve months | Election step | Counties led | Rating | $0 premium |
|---|---|---|---|---|---|---|---|---|
| 1 | UnitedHealth | 49,285 | 36.0% | −2.9% | −3.0% | 2 of 4 | 4.00 | 100% |
| 2 | Hawaii Medical Service Association | 31,777 | 23.2% | +5.8% | −0.6% | 0 of 4 | 3.00 | 30% |
| 3 | Kaiser | 21,089 | 15.4% | +2.9% | +0.7% | 1 of 3 | 4.50 | 7% |
| 4 | Humana | 15,767 | 11.5% | −23.5% | +2.5% | 1 of 3 | 4.16 | 65% |
| 5 | Devoted | 14,588 | 10.7% | +89.2% | +33.0% | 0 of 4 | 3.00 | 92% |
What 2027 does to Hawaii Medical Service Association's plans in Hawaii
The fate assigned to each of the carrier’s plans for 2027, joined to the members in it today.
15,884 members are in 2 plans that end and must choose again. In all, 50% of Hawaii Medical Service Association’s Hawaii members are in a plan whose service area or status changes.
The read on Hawaii Medical Service Association in Hawaii 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.
Hawaii Medical Service Association elsewhere, and the rest of Hawaii
- UnitedHealth36.0%
- Kaiser15.4%
- Humana11.5%
- Devoted10.7%
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.
- Hawaii Medical Service Association is the parent organization Hawaii Medical Service Association; its 5 plans in Hawaii may sell under other brand names. The rating is the 2027 overall Star Rating of its contracts weighted by members in Hawaii; $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.