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.
Learn more about our community, about our mission, vision and values, and how you can help support the OHDSI community.
Registration and the call for participation is now OPEN for the 2026 OHDSI Global Symposium, which will be held Oct. 20-22 in New Brunswick, NJ. This event unites hundreds of collaborators to showcase scientific innovations and build bridges for future research. Together, we are advancing our mission to generate real-world evidence that informs better health decisions and improves patient care.
To improve health by empowering a community to collaboratively generate the evidence that promotes better health decisions and better care.