Medicare Advantage in District of Columbia, District of Columbia
34,089 people in District of Columbia, District of Columbia were enrolled in Medicare Advantage in October 2026, 34.4% of 99,019 eligible beneficiaries (−0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 62% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 4,346 (highly concentrated). For 2027, 2,211 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 16 to 11.
Parent organizations in District of Columbia
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 21,005 | −825 | 62.2% |
| Kaiser Foundation Health Plan, Inc. | 6,573 | −115 | 19.5% |
| CVS Health Corporation | 2,656 | −102 | 7.9% |
| Humana Inc. | 1,593 | +780 | 4.7% |
| Health Care Service Corporation | 1,386 | +70 | 4.1% |
| CareFirst, Inc. | 455 | +284 | 1.3% |
| Element Care INC. | 43 | −1 | 0.1% |
| Elevance Health, Inc. | 35 | 0 | 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 25 | −5 | under 0.1% |
| Highmark Health | 16 | 0 | 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, 11,957 beneficiaries in District of Columbia were assigned to 188 Medicare Shared Savings Program ACOs, 30.2% of assignable Original Medicare beneficiaries. Together, roughly 54% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.