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Welcome to OHDSI!
The Observational Health Data Sciences and Informatics (or OHDSI, pronounced "Odyssey") program is a multi-stakeholder, interdisciplinary collaborative to bring out the value of health data through large-scale analytics. All our solutions are open-source.
OHDSI has established an international network of researchers and observational health databases with a central coordinating center housed at Columbia University.
Read more about us, about our goals, and how you can help support the OHDSI community.
2025 Global Symposium
Please join us at the 2025 Global Symposium, which will be held at the Hyatt Regency Hotel in New Brunswick, N.J., on Oct. 7-9. There will be tutorials Oct. 7, the main conference Oct. 8, and workshop activities Oct. 9.