MA Enrollment Explorer / Parent organizations / Trinity Health Corporation
Trinity Health Corporation: Medicare Advantage enrollment and market share
Trinity Health Corporation had 104,420 Medicare Advantage members in October 2026, #32 nationally with 0.29% of all MA enrollment. It gained 44,633 members (+74.7%) since October 2025, and has enrollment in 16 states and 161 counties with 11 or more members, leading the market in 8 of them. In the 2026 Annual Election Period (December to February) it gained 42,758 members (+71.0%). For 2027, 24,778 of its members are in plans that terminate and 266 in plans leaving their county, and it leaves 22 counties entirely.
104KMA members, October 2026
+74.7%change since October 2025 (+44,633)
0.29%national MA share, rank 32
19contracts with enrollment
Largest states
| State | Members | Share of state MA |
|---|---|---|
| Ohio | 55,799 | 3.7% |
| Idaho | 22,894 | 12.0% |
| Michigan | 10,984 | 0.7% |
| Iowa | 8,203 | 3.1% |
| New York | 3,014 | 0.1% |
| Pennsylvania | 1,234 | 0.1% |
| Delaware | 290 | 0.3% |
| Massachusetts | 190 | 0.0% |
| Indiana | 179 | 0.0% |
| Alabama | 159 | 0.0% |
| New Jersey | 153 | 0.0% |
| North Carolina | 119 | 0.0% |
| Louisiana | 97 | 0.0% |
| Maryland | 78 | 0.0% |
| Florida | 51 | 0.0% |
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Franklin County, OH | 13,609 | +1,155 | 11.4% |
| Ada County, ID | 11,267 | +9,467 | 18.9% |
| Canyon County, ID | 7,991 | +6,609 | 25.6% |
| Fairfield County, OH | 4,959 | +253 | 25.3% |
| Licking County, OH | 4,832 | +490 | 21.3% |
| Montgomery County, OH | 4,717 | +3,080 | 6.4% |
| Ross County, OH | 2,469 | +737 | 24.6% |
| Clark County, OH | 2,217 | +555 | 11.3% |
| Muskegon County, MI | 2,093 | +631 | 6.3% |
| Kent County, MI | 1,981 | +742 | 2.1% |
| Hamilton County, OH | 1,872 | +514 | 2.0% |
| Polk County, IA | 1,624 | +514 | 4.0% |
| Pickaway County, OH | 1,576 | +83 | 21.5% |
| Washtenaw County, MI | 1,550 | +741 | 3.7% |
| Greene County, OH | 1,522 | +754 | 8.2% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H3668 MediGold | HMO/HMOPOS | 38,255 | 42,573 | 58,586 |
| H6910 Saint Alphonsus Health Plan | HMO/HMOPOS | 2,515 | 3,662 | 22,371 |
| H9179 Trinity Health Plan of Michigan | HMO/HMOPOS | 1,569 | 6,117 | 11,057 |
| H1846 MediGold | Local PPO | 1,416 | 2,682 | 5,930 |
| H9827 Trinity Health Plan New York | HMO/HMOPOS | 292 | 1,378 | 2,597 |
| H3919 Mercy LIFE | National PACE | 794 | 791 | 829 |
| H3828 Saint Alphonsus Health Plan | Local PPO | 65 | 292 | 751 |
| H3322 Eddy SeniorCare | National PACE | 408 | 429 | 446 |
| H5493 Saint Francis LIFE | National PACE | 308 | 307 | 302 |
| H6551 LIFE St. Mary | National PACE | 247 | 274 | 269 |
| H0809 Mercy LIFE | National PACE | 202 | 208 | 192 |
| H9842 Saint Joseph PACE | National PACE | 148 | 172 | 181 |
| H3908 Mercy LIFE - West Philadelphia | National PACE | 295 | 252 | 178 |
| H4074 Mercy LIFE of Alabama | National PACE | 170 | 160 | 169 |
| H3493 Trinity Health LIFE New Jersey | National PACE | 158 | 170 | 154 |
| H1500 LIFE St. Joseph of the Pines | National PACE | 164 | 168 | 152 |
| H1312 Trinity Health PACE of Alexandria | National PACE | 23 | 78 | 111 |
| H6251 Trinity Health PACE of Montgomery County | National PACE | n/a | 39 | 85 |
| H5538 Trinity Health PACE of Pensacola | National PACE | 0 | 35 | 60 |
| H6408 Trinity Health Plan Of New England | HMO/HMOPOS | 109 | n/a | n/a |
| H8998 Trinity Health Plan Of New England | Local PPO | 50 | n/a | n/a |
Star ratings for these contracts are in the MA Quality Dashboard.