About CareGraph
Free, open-source Medicare data exploration
What is CareGraph?
CareGraph — Public CMS Data
The federal government publishes dozens of datasets about how Medicare works, but using these datasets can be hard. Join keys differ. File formats differ. File sizes can be unwieldy. CareGraph stitches them together, and repackages for end-user access. Look up a hospital, see its readmission performance, and its downstream SNF quality, and its affiliated ACOs, and its county's SDOH context — all in one place, cross-linked and exportable as CSV.
Free. No ads. No login. Convenient links to copy-paste. Source code MIT-licensed on GitHub. Built by a maintainer who believes public data can be more accessible, not just technically available.
License
CareGraph source code is released under the MIT License. Data content is sourced from federal agencies and is subject to each source's own license terms.
| Data Source | Agency | License / Terms |
|---|---|---|
| Hospital General Information | CMS | Public domain (U.S. government work) |
| Hospital Readmissions Reduction Program (HRRP) | CMS | Public domain (U.S. government work) |
| Hospital Value-Based Purchasing (HVBP) | CMS | Public domain (U.S. government work) |
| Medicare Geographic Variation | CMS | Public domain (U.S. government work) |
| Skilled Nursing Facility Quality Reporting | CMS | Public domain (U.S. government work) |
| ACO Performance (Shared Savings Program) | CMS | Public domain (U.S. government work) |
| CDC PLACES | CDC | Public domain (U.S. government work) |
| County FIPS codes | U.S. Census Bureau | Public domain (U.S. government work) |
How to Cite
If you use CareGraph in your work, please cite it as:
CareGraph. (2026). CareGraph: Unified CMS data exploration tool. https://caregraph.org. Source code: https://github.com/fabkury/caregraph.BibTeX:
@misc{caregraph2026,
title = {CareGraph: Unified CMS Data Exploration Tool},
year = {2026},
url = {https://caregraph.org},
note = {Source code: https://github.com/fabkury/caregraph}
}Source Code
CareGraph is open source. The full source code — ETL pipeline, Astro frontend, and deployment scripts — is available on GitHub:
Report an Error
Found incorrect data, a broken link, or a bug? Please open an issue on GitHub so we can investigate and fix it:
When reporting data errors, please include the entity page URL and the specific metric that appears incorrect. This helps us trace the issue back to the source dataset.