The Anesthesia Quality Institute (AQI) is home to the National Anesthesia Clinical Outcomes Registry (NACOR), a data warehouse that has been designated as a Qualified Clinical Data Registry (QCDR) by the Centers for Medicare and Medicaid Services (CMS) for Physician Quality Reporting System (PQRS) reporting. With 20 million cases and growing, Anesthesia Quality Institute's clinical data provides an evidence-based rational that informs treatment choices and helps control treatment costs.