The following data is for employees working in full-time, part-time and temporary positions. UHS data includes U.K. employees, which comprise about 1% of full-time positions at the system.
Health systems ranked by employee count growth since 2018:
| Health system | 2018 employee count | 2023 employee count | Percent change |
| HCA | 256,896 | 299,383 | 16.5% |
| UHS | 78,700 | 96,700 | 22.9% |
| Tenet | 123,933 | 100,410 | -19.0% |
| CHS | 88,000 | 61,000 | -30.7% |
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