QHIN: Qualified Health Information Network
QHINs are health data networks designated by The Sequoia Project (TEFCA's Recognized Coordinating Entity) as meeting the technical, security, and policy standards required for nationwide exchange under the Common Agreement.
Initial designated QHINs
- eHealth Exchange — long-standing federal-and-public-sector network
- Epic Nexus — Epic-operated
- KONZA National Network
- MedAllies
- Health Gorilla
- CommonWell Health Alliance
- Kno2
- Additional designations roll out as networks complete the on-boarding process.
Why QHIN designation matters
QHINs exchange data with each other under uniform Common Agreement terms. A provider connected to one QHIN can request and receive patient records from any other QHIN. This collapses the previously fragmented exchange landscape (CommonWell-only, Carequality-only, eHealth Exchange-only) into a single mesh.
Where Vizier fits
Vizier doesn't need to be a QHIN itself — it reads from EHR connectors at organizations whose EHRs participate in QHIN exchange. The cross-system data those EHRs receive via QHIN exchange is part of the connector dataset Vizier analyzes. Patients seen across multiple health systems show up as one longitudinal record where the EHR has reconciled the QHIN-pulled data.