MSSP ACO Explorer / All ACOs / Public Hospital District #1 of King County
Public Hospital District #1 of King County
Public Hospital District #1 of King County (A3922) is a Medicare Shared Savings Program ACO based in Washington, in the ENHANCED track. In PY 2024 it had 7,814 assigned beneficiaries, spent 1.0% below its benchmark, and earned $734K in shared savings, with a quality score of 89.2. It appears in 7 performance years of CMS results, from 2018 to 2024.
1.0%savings rate, PY 2024 (median ACO 4.2%)
$734Kearned shared savings, PY 2024
89.2quality score, PY 2024 (median 83.1)
7,814assigned beneficiaries, PY 2024
Results by performance year
| Year | Track | Assigned | Savings rate | Benchmark minus spending | Earned savings or losses | Quality |
|---|---|---|---|---|---|---|
| 2024 | ENHANCED | 7,814 | 1.0% | $998K | $734K | 89.2 |
| 2023 | ENHANCED | 8,904 | 1.4% | $1.4M | $997K | 86.9 |
| 2022 | BASIC E | 8,894 | 2.1% | $2.0M | $969K | 87.4 |
| 2021 | Track 1 | 9,030 | 6.4% | $5.8M | $2.8M | 100.0 |
| 2020 | Track 1 | 8,571 | 3.7% | $2.9M | $1.4M | 97.2 |
| 2019 | Track 1 | 9,451 | 4.3% | $4.2M | $2.0M | 97.5 |
| 2018 | Track 1 | 9,141 | 2.3% | $2.1M | $0 | 100.0 |
Savings rate is benchmark minus expenditures over benchmark, as CMS defines it. Quality scores before and after PY 2021 are on different scales.
Where its beneficiaries live
In PY 2024, Public Hospital District #1 of King County had assigned beneficiaries in 98 counties. The ten largest:
| County | Assigned beneficiaries | Share of the ACO |
|---|---|---|
| King, WA | 7,075 | 90.4% |
| Pierce, WA | 424 | 5.4% |
| Snohomish, WA | 33 | 0.4% |
| Thurston, WA | 28 | 0.4% |
| Kittitas, WA | 19 | 0.2% |
| Kitsap, WA | 18 | 0.2% |
| Grays Harbor, WA | 16 | 0.2% |
| Mason, WA | 14 | 0.2% |
| Maricopa, AZ | 11 | 0.1% |
| Jefferson, AL | 1 to 10 | 0.0% |
CMS suppresses county counts of 1 to 10. Open the full footprint map in the explorer.