Healthcare Effectiveness Data and Information Set

Acronym: HEDIS

Is a set of standardized performance measures developed by the National Committee for Quality Assurance (NCQA) to objectively measure, report, and compare quality across health plans, health insurance companies, and physician groups. HEDIS is primarily a health plan (payer) measurement system, not a direct provider incentive program. It is used by over 200 health plans, including most major commercial, Medicaid, and Medicare Advantage organizations, which submit HEDIS data. These plans cover more than 200 million Americans-over 70% of the U.S. population. While HEDIS directly measures plan performance, millions of providers-including physicians, clinics, and hospitals-are indirectly impacted. Providers are incentivized by health plans to perform well on HEDIS measures, as these affect network selection, bonuses, and reputation. Exact provider counts are not published, but the number is in the hundreds of thousands to millions, as virtually every provider serving insured U.S. patients deals with HEDIS requirements for at least one payer.