MA Enrollment Explorer / States / New Hampshire
Medicare Advantage in New Hampshire: enrollment, penetration and market share
111,734 people in New Hampshire were enrolled in Medicare Advantage in October 2026. 30.7% of the state's 363,841 eligible Medicare beneficiaries are in Medicare Advantage, −4.8 pts since October 2025. Humana Inc. is the largest parent organization with 38% of reported enrollment; 11 parent organizations have 11 or more members, and the market's HHI is 2,782 (highly concentrated). Through the 2026 Annual Election Period (December to February), reported MA enrollment in New Hampshire changed by −15,716 (−12.6%).
30.7%MA penetration, October 2026
112KMA enrollees
11parent organizations (11+ members)
2,782HHI, highly concentrated
Parent organizations in New Hampshire
| Parent organization | Members | Change | Share | Share change |
|---|---|---|---|---|
| Humana Inc. | 42,723 | +31,798 | 38.5% | +29.8 pts |
| UnitedHealth Group, Inc. | 34,169 | −12,036 | 30.8% | −6.1 pts |
| Elevance Health, Inc. | 15,727 | −12,531 | 14.2% | −8.4 pts |
| CVS Health Corporation | 12,681 | −2,836 | 11.4% | −1.0 pts |
| BMC Health System, Inc. | 5,100 | −5,208 | 4.6% | −3.6 pts |
| Health Care Service Corporation | 345 | new | 0.3% | +0.3 pts |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 115 | +60 | 0.1% | +0.1 pts |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 44 | −342 | under 0.1% | −0.3 pts |
| CareSource | 42 | new | under 0.1% | +0.04 pts |
| Highmark Health | 35 | −2 | under 0.1% | +0.00 pts |
| Mass General Brigham Incorporated | 14 | new | under 0.1% | +0.01 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 |
|---|---|---|---|
| Hillsborough County | 33,098 | 34.8% | UnitedHealth Group, Inc. 38% |
| Rockingham County | 26,043 | 30.9% | UnitedHealth Group, Inc. 40% |
| Merrimack County | 15,171 | 36.7% | UnitedHealth Group, Inc. 36% |
| Strafford County | 11,028 | 35.8% | Humana Inc. 51% |
| Belknap County | 7,189 | 33.5% | Humana Inc. 68% |
| Grafton County | 5,560 | 21.7% | Humana Inc. 57% |
| Cheshire County | 5,542 | 25.0% | Humana Inc. 69% |
| Coos County | 3,545 | 32.0% | Humana Inc. 73% |
| Carroll County | 2,365 | 12.2% | BMC Health System, Inc. 41% |
| Sullivan County | 2,193 | 17.5% | Humana Inc. 46% |