This Joint Commission report summarizes the performance of hospitals across 47 accountability measures—evidence-based metrics that are directly linked to patient outcomes. This year's calculation for identifying Top Performers included a new accountability measure for immunization. Top Performers are recognized by meeting three 95% performance thresholds; 1099 hospitals were identified. This represents 33% of all Joint Commission-accredited hospitals that report core measure performance data, a 77% increase compared to the previous year. Hospitals have measurably improved the quality of care over the past year for heart attacks, pneumonia, surgical care, children's asthma care, inpatient psychiatric services, venous thromboembolism, and stroke patients.