Medicare Advantage in Montgomery County, Texas
65,189 people in Montgomery County, Texas were enrolled in Medicare Advantage in October 2026, 52.1% of 125,074 eligible beneficiaries (−0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 42% of reported enrollment; 17 parent organizations have 11 or more members and the HHI is 2,413 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 8,784 members here are in plans that terminate or leave the county, and Memorial Hermann Health System leaves. MA plans offered go from 53 to 43.
Parent organizations in Montgomery County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 27,010 | +78 | 41.5% |
| Humana Inc. | 9,572 | +1,882 | 14.7% |
| CVS Health Corporation | 9,521 | −1,102 | 14.6% |
| Health Care Service Corporation | 9,382 | +144 | 14.4% |
| Centene Corporation | 2,782 | −220 | 4.3% |
| Devoted Health, Inc. | 2,425 | +952 | 3.7% |
| Elevance Health, Inc. | 1,940 | +615 | 3.0% |
| Memorial Hermann Health System | 1,694 | +124 | 2.6% |
| Verda Healthcare, Inc. | 246 | +38 | 0.4% |
| SCAN Group | 231 | new | 0.4% |
| Molina Healthcare, Inc. | 50 | −5 | under 0.1% |
| Regency ISNP Holdings LLC | 49 | −6 | under 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 48 | +4 | under 0.1% |
| Harris County Hospital District | 24 | new | under 0.1% |
| California Physicians' Service | 19 | +2 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 18,736 beneficiaries in Montgomery County were assigned to 196 Medicare Shared Savings Program ACOs, 47.4% of assignable Original Medicare beneficiaries. Together, roughly 75% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.