Medicare Advantage in Baltimore City, Maryland
37,990 people in Baltimore City, Maryland were enrolled in Medicare Advantage in October 2026, 36.8% of 103,155 eligible beneficiaries (−1.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 18% of reported enrollment; 15 parent organizations have 11 or more members and the HHI is 1,440 (moderately concentrated). For 2027, 3,917 members here are in plans that terminate or leave the county, and Humana Inc., SNP Holdings, LLC leave. MA plans offered go from 14 to 11.
Parent organizations in Baltimore City
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 6,901 | −157 | 18.3% |
| Kaiser Foundation Health Plan, Inc. | 6,886 | −43 | 18.3% |
| CareFirst, Inc. | 5,828 | +2,080 | 15.4% |
| LifeBridge Health, Inc. | 4,850 | +1,291 | 12.9% |
| CVS Health Corporation | 4,363 | −4,011 | 11.6% |
| Health Care Service Corporation | 4,315 | −130 | 11.4% |
| Humana Inc. | 3,821 | +566 | 10.1% |
| ISNP Holdings, LLC | 348 | +1 | 0.9% |
| Elevance Health, Inc. | 178 | −19 | 0.5% |
| The Johns Hopkins Health System Corporation | 84 | +3 | 0.2% |
| West Baltimore PACE Community Coalition LLC | 47 | +16 | 0.1% |
| SNP Holdings, LLC | 41 | −77 | 0.1% |
| Johns Hopkins Healthcare LLC | 37 | +19 | under 0.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 17 | −2 | under 0.1% |
| Highmark Health | 12 | +1 | 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, 3,088 beneficiaries in Baltimore City were assigned to 131 Medicare Shared Savings Program ACOs, 7.2% of assignable Original Medicare beneficiaries. Together, roughly 41% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.