About the study

History and approach

Each year, Merative 15 Top Health Systems conducts a rigorous analysis of US health system performance based on metrics aggregated from individual hospital data. The result is a list of the top performing US health systems in the nation – based on a balanced scorecard derived from publicly available clinical, operational and patient experience data.


If all health systems performed like this year’s winners:

Lives saved


additional lives could be saved in-hospital

Costs saved

USD 12.5

billion in inpatient costs could be saved

Readmissions lowered


fewer patients who were discharged would be readmitted within 30 days