District of Columbia Medicare Advantage market share
In September 2026, 33,636 District of Columbia Medicare beneficiaries were enrolled in a Medicare Advantage plan across 57 parent carriers and 1 counties, led by UnitedHealth Group, Inc. with 62.3% of counted enrollment.
Data month
September 2026
Advantage enrollees
33,636
+0.4% vs September 2025
Parent carriers
57
Advantage penetration
33.0%
CMS Medicare Monthly Enrollment, 2024
Carriers in District of Columbia
CMS Monthly Enrollment by Contract/Plan/State/County (CPSC) · September 2026
| # | Parent organisation | Enrollees | Share | Counties | vs September 2025 |
|---|---|---|---|---|---|
| 1 | UnitedHealth Group, Inc. | 20,957 | 62.3% | 1 | -3.8% |
| 2 | Kaiser Foundation Health Plan, Inc. | 6,534 | 19.4% | 1 | -2.1% |
| 3 | CVS Health Corporation | 2,642 | 7.9% | 1 | -2.7% |
| 4 | Humana Inc. | 1,593 | 4.7% | 1 | +102.4% |
| 5 | Health Care Service Corporation | 1,392 | 4.1% | 1 | +6.6% |
| 6 | CareFirst, Inc. | 452 | 1.3% | 1 | +186.1% |
| 7 | Elevance Health, Inc. | 27 | 0.1% | 1 | +8.0% |
| 8 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 24 | 0.1% | 1 | -20.0% |
| 9 | Highmark Health | 15 | 0.0% | 1 | +7.1% |
| 10 | Alignment Healthcare USA, LLC | 0 | 0.0% | 1 | — |
| 11 | Allina Health and Aetna Insurance Holding Company | 0 | 0.0% | 1 | — |
| 12 | Aultman Health Foundation | 0 | 0.0% | 1 | — |
| 13 | Aware Integrated, Inc. | 0 | 0.0% | 1 | — |
| 14 | Baystate Health, Inc. | 0 | 0.0% | 1 | — |
| 15 | Blue Cross & Blue Shield of Rhode Island | 0 | 0.0% | 1 | — |
| 16 | Blue Cross and Blue Shield of Massachusetts, Inc. | 0 | 0.0% | 1 | — |
| 17 | Blue Cross Blue Shield of Kansas | 0 | 0.0% | 1 | — |
| 18 | Blue Cross Blue Shield of Nebraska | 0 | 0.0% | 1 | — |
| 19 | BlueCross BlueShield of Alabama | 0 | 0.0% | 1 | — |
| 20 | BlueCross BlueShield of South Carolina (BCBSSC) | 0 | 0.0% | 1 | — |
| 21 | BlueCross BlueShield of Tennessee | 0 | 0.0% | 1 | — |
| 22 | California Physicians' Service | 0 | 0.0% | 1 | — |
| 23 | Cambia Health Solutions, Inc. | 0 | 0.0% | 1 | — |
| 24 | CAPITAL BLUE CROSS | 0 | 0.0% | 1 | — |
| 25 | CareSource | 0 | 0.0% | 1 | — |
| 26 | Centene Corporation | 0 | 0.0% | 1 | — |
| 27 | Corewell Health | 0 | 0.0% | 1 | — |
| 28 | CuraCor Solutions Corp. | 0 | 0.0% | 1 | — |
| 29 | EmblemHealth, Inc. | 0 | 0.0% | 1 | — |
| 30 | Fallon Community Health Plan, Inc. | 0 | 0.0% | 1 | — |
| 31 | Fenyx Health Holdings, Inc. | 0 | 0.0% | 1 | — |
| 32 | General Catalyst Group Management Holdings LP | 0 | 0.0% | 1 | — |
| 33 | Guidewell Mutual Holding Corporation | 0 | 0.0% | 1 | — |
| 34 | Hawaii Medical Service Association | 0 | 0.0% | 1 | — |
| 35 | Healthfirst, Inc. | 0 | 0.0% | 1 | — |
| 36 | HealthPartners, Inc. | 0 | 0.0% | 1 | — |
| 37 | Henry Ford Health System | 0 | 0.0% | 1 | — |
| 38 | Horizon Mutual Holdings, Inc | 0 | 0.0% | 1 | — |
| 39 | Independence Health Group, Inc. | 0 | 0.0% | 1 | — |
| 40 | Independent Health Association, Inc. | 0 | 0.0% | 1 | — |
| 41 | Johns Hopkins Healthcare LLC | 0 | 0.0% | 1 | — |
| 42 | LifeBridge Health, Inc. | 0 | 0.0% | 1 | — |
| 43 | Lifetime Healthcare, Inc. | 0 | 0.0% | 1 | — |
| 44 | Louisiana Health Service & Indemnity Company | 0 | 0.0% | 1 | — |
| 45 | Martin's Point Health Care, Inc. | 0 | 0.0% | 1 | — |
| 46 | Mass General Brigham Incorporated | 0 | 0.0% | 1 | — |
| 47 | Medica Holding Company | 0 | 0.0% | 1 | — |
| 48 | MEDICAL MUTUAL OF OHIO | 0 | 0.0% | 1 | — |
| 49 | Molina Healthcare, Inc. | 0 | 0.0% | 1 | — |
| 50 | MVP Health Care, Inc. | 0 | 0.0% | 1 | — |
| 51 | NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND | 0 | 0.0% | 1 | — |
| 52 | Network Health, Inc. | 0 | 0.0% | 1 | — |
| 53 | Sentara Health Care (SHC) | 0 | 0.0% | 1 | — |
| 54 | SNP Holdings, LLC | 0 | 0.0% | 1 | — |
| 55 | The Health Plan of West Virginia, Inc. | 0 | 0.0% | 1 | — |
| 56 | UPMC Health System | 0 | 0.0% | 1 | — |
| 57 | USAble Mutual Insurance Company | 0 | 0.0% | 1 | — |
County view
Leading carrier and Advantage enrollment in each District of Columbia county. Penetration is from CMS Medicare Monthly Enrollment, 2024.
| County | Advantage enrollees | Leading carrier | Leader share | Carriers | Penetration |
|---|---|---|---|---|---|
| District of Columbia | 33,636 | UnitedHealth Group, Inc. | 62.3% | 57 | 33.0% |
What is missing
CMS suppresses any plan-county cell with fewer than 11 enrollees. Those enrollees are missing from these counts, so every figure is a floor, not an exact total.
What is counted
Counts cover Medicare Advantage contracts only (Local CCP, Regional CCP, PFFS and MSA). Standalone Part D drug plans, cost plans, HCPP and PACE contracts are excluded.
Source: CMS Monthly Enrollment by Contract/Plan/State/County (CPSC).