MA Enrollment Explorer / States / Hawaii
Medicare Advantage in Hawaii: enrollment, penetration and market share
169,726 people in Hawaii were enrolled in Medicare Advantage in October 2026. 53.3% of the state's 318,145 eligible Medicare beneficiaries are in Medicare Advantage, −0.4 pts since October 2025. UnitedHealth Group, Inc. is the largest parent organization with 30% of reported enrollment; 13 parent organizations have 11 or more members, and the market's HHI is 2,203 (highly concentrated). Through the 2026 Annual Election Period (December to February), reported MA enrollment in Hawaii changed by +685 (+0.4%).
53.3%MA penetration, October 2026
170KMA enrollees
13parent organizations (11+ members)
2,203HHI, highly concentrated
Parent organizations in Hawaii
| Parent organization | Members | Change | Share | Share change |
|---|---|---|---|---|
| UnitedHealth Group, Inc. | 50,424 | −1,597 | 29.8% | −1.2 pts |
| Hawaii Medical Service Association | 42,793 | +4,095 | 25.3% | +2.2 pts |
| Kaiser Foundation Health Plan, Inc. | 37,389 | +575 | 22.1% | +0.2 pts |
| Humana Inc. | 17,411 | −6,947 | 10.3% | −4.2 pts |
| Devoted Health, Inc. | 14,604 | +6,922 | 8.6% | +4.1 pts |
| AlohaCare | 2,522 | +203 | 1.5% | +0.1 pts |
| Centene Corporation | 1,862 | −1,865 | 1.1% | −1.1 pts |
| CVS Health Corporation | 1,520 | −21 | 0.9% | −0.02 pts |
| Elevance Health, Inc. | 364 | +17 | 0.2% | +0.01 pts |
| California Physicians' Service | 111 | +5 | under 0.1% | +0.00 pts |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 82 | −3 | under 0.1% | −0.00 pts |
| Health Care Service Corporation | 32 | +1 | under 0.1% | +0.00 pts |
| Highmark Health | 16 | 0 | under 0.1% | −0.00 pts |
Change and share change are since October 2025. Shares are of reported enrollment in the CMS State/County/Contract file.
Counties
| County | MA enrollees | Penetration | Leading parent |
|---|---|---|---|
| Honolulu County | 114,496 | 54.6% | UnitedHealth Group, Inc. 32% |
| Hawaii County | 26,188 | 48.5% | UnitedHealth Group, Inc. 31% |
| Maui County | 20,349 | 56.0% | Kaiser Foundation Health Plan, Inc. 37% |
| Kauai County | 8,693 | 48.4% | Humana Inc. 39% |
| Kalawao County | 0 | n/a |