MA Enrollment Explorer / Parent organizations / Allina Health and Aetna Insurance Holding Company
Allina Health and Aetna Insurance Holding Company: Medicare Advantage enrollment and market share
Allina Health and Aetna Insurance Holding Company had 56,917 Medicare Advantage members in October 2026, #48 nationally with 0.16% of all MA enrollment. It gained 27,029 members (+90.4%) since October 2025, and has enrollment in 1 state and 23 counties with 11 or more members. In the 2026 Annual Election Period (December to February) it gained 23,867 members (+79.1%). For 2027, 757 of its members are in plans that terminate and 1,412 in plans leaving their county, and it leaves 7 counties entirely.
57KMA members, October 2026
+90.4%change since October 2025 (+27,029)
0.16%national MA share, rank 48
1contracts with enrollment
Largest states
| State | Members | Share of state MA |
|---|---|---|
| Minnesota | 56,815 | 8.2% |
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Hennepin County, MN | 14,813 | +8,019 | 11.1% |
| Anoka County, MN | 9,323 | +4,627 | 20.5% |
| Ramsey County, MN | 7,228 | +3,711 | 11.8% |
| Dakota County, MN | 6,659 | +3,148 | 12.8% |
| Wright County, MN | 3,497 | +1,740 | 20.7% |
| Washington County, MN | 3,339 | +1,638 | 9.2% |
| Carver County, MN | 2,374 | +1,036 | 19.1% |
| Scott County, MN | 1,894 | +910 | 12.5% |
| Isanti County, MN | 1,717 | +791 | 28.3% |
| Blue Earth County, MN | 911 | +455 | 16.9% |
| Chisago County, MN | 902 | +476 | 10.4% |
| Kanabec County, MN | 841 | +484 | 30.5% |
| Mille Lacs County, MN | 596 | +390 | 13.3% |
| Brown County, MN | 552 | −263 | 17.7% |
| Sibley County, MN | 525 | +187 | 22.3% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H3219 Allina Health Aetna Medicare | Local PPO | 27,752 | 29,888 | 56,917 |
Star ratings for these contracts are in the MA Quality Dashboard.