National Committee for Quality Assurance (NCQA) – the premier accrediting body for health insurance plans – annual State of Health Care Quality Report, 2018. Reports performance for over 1000 managed care HMO & PPO plans on measures of effectiveness (HEDIS) during 2017, in more than 40 health topics such as cancer screening, diabetes care, osteoporosis management, controlling high blood pressure, immunization rates, asthma care, COPD, diabetes, appropriate medications, maternity care, mental health follow-up and readmissions. Also reports averages for member satisfaction and experience with getting the kind of care they expect (CAHPS). Aggregate data only. An example of the type of information found in this report: In 2017, about 45% of Commercial health plan members who visited the emergency department for a mental illness, had a follow-up within 7 days of the ER visit. Report published December 2018.