Medicare Advantage in Carroll County, New Hampshire
2,365 people in Carroll County, New Hampshire were enrolled in Medicare Advantage in October 2026, 12.2% of 19,447 eligible beneficiaries (−20.7 pts since October 2025). BMC Health System, Inc. is the largest parent organization with 41% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,730 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 953 members here are in plans that terminate or leave the county, and BMC Health System, Inc., Humana Inc. leave. MA plans offered go from 1 to 2.
Parent organizations in Carroll County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| BMC Health System, Inc. | 937 | +79 | 41.1% |
| Elevance Health, Inc. | 536 | −317 | 23.5% |
| UnitedHealth Group, Inc. | 408 | −2,075 | 17.9% |
| CVS Health Corporation | 277 | −328 | 12.2% |
| Humana Inc. | 86 | −348 | 3.8% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 21 | new | 0.9% |
| Health Care Service Corporation | 13 | new | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 4,094 beneficiaries in Carroll County were assigned to 107 Medicare Shared Savings Program ACOs, 44.4% of assignable Original Medicare beneficiaries. Together, roughly 51% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.