MA Enrollment Explorer / Parent organizations / Johns Hopkins Healthcare LLC
Johns Hopkins Healthcare LLC: Medicare Advantage enrollment and market share
Johns Hopkins Healthcare LLC had 15,025 Medicare Advantage members in October 2026, #89 nationally with 0.04% of all MA enrollment. It gained 2,114 members (+16.4%) since October 2025, and has enrollment in 2 states and 16 counties with 11 or more members. In the 2026 Annual Election Period (December to February) it gained 2,401 members (+18.7%). For 2027, 1,685 of its members are in plans that terminate and 11 in plans leaving their county.
15KMA members, October 2026
+16.4%change since October 2025 (+2,114)
0.04%national MA share, rank 89
3contracts with enrollment
Largest states
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Baltimore County, MD | 4,908 | +236 | 10.8% |
| Montgomery County, MD | 2,367 | +686 | 5.3% |
| Anne Arundel County, MD | 1,872 | +199 | 8.5% |
| Howard County, MD | 1,767 | +343 | 15.5% |
| Carroll County, MD | 767 | −14 | 9.7% |
| Frederick County, MD | 735 | +77 | 6.8% |
| Washington County, MD | 638 | +59 | 7.8% |
| Wicomico County, MD | 632 | −33 | 10.5% |
| Worcester County, MD | 433 | −38 | 9.9% |
| Fairfax County, VA | 371 | new | 0.6% |
| Somerset County, MD | 228 | −12 | 13.8% |
| Loudoun County, VA | 98 | new | 0.5% |
| Prince William County, VA | 55 | new | 0.2% |
| Baltimore City, MD | 37 | +19 | 0.1% |
| Alexandria City, VA | 35 | new | 0.6% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H1225 Johns Hopkins Advantage MD | HMO/HMOPOS | 7,672 | 7,124 | 7,616 |
| H3890 Johns Hopkins Advantage MD | Local PPO | 6,059 | 5,787 | 6,804 |
| H1339 Johns Hopkins Advantage MD | HMO/HMOPOS | 0 | 0 | 605 |
Star ratings for these contracts are in the MA Quality Dashboard.