Sponsored by the Agency for Healthcare Research and Quality (AHRQ), HCUP is a family of databases containing inpatient, outpatient, and emergency department data from state organizations, hospital associations, and the federal government. It’s the largest collection of longitudinal hospital care data in the U.S., starting from 1988, and supports analysis of healthcare access, costs, quality, and outcomes.

Managed by the U.S. Department of Health & Human Services, this platform offers over 197,000 datasets, including Medicare claims, epidemiology, and population statistics. It covers topics like healthcare infrastructure, public safety, and health outcomes.

Maintained by the University of California, Berkeley, and the Max Planck Institute, HMD provides detailed mortality and population statistics.

A CDC program collecting health and nutrition data through interviews, examinations, and laboratory tests, focusing on U.S. population health trends.

Provided by AHRQ, these tools offer data on healthcare quality and disparities across the U.S., including state-level performance metrics and trends in care delivery.