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N3C (National COVID Cohort Collaborative)

NIH NCATS (National Center for Advancing Translational Sciences)
HDB-0159

N3C is a centralized research platform that aggregates de-identified electronic health record data from over 90 institutions into a secure enclave, containing data on over 500,000 patients for COVID-19, Long COVID, and other disease research. Registered researchers can access the data to conduct collaborative studies on multiple disease domains with full data provenance documentation and strong privacy protections.

Category
Open dataset
Access
Free registration
Cost
Free
Region
US — United States
Size
500,000+ patients
Data types
electronic health records, demographics, clinical diagnoses, medications, procedures
covid-19long-covidmulti-diseasecentralized-enclaveopen-research
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Record HDB-0159 · last verified 2026-08-05 · listed in Open datasets

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