Blog Post
Chartfold: Owning Your Medical Records
I have cancer. My oncologist is at one hospital system (Siteman/BJC), my primary care doctor at another, and my earlier treatment history lives at a third (Anderson, where my first oncologist practiced). Patient portals are fine for browsing, but they don’t answer questions. They show you your data one lab result at a time, one note at a time, one visit at a time.
I wanted to run queries against my medical records. Correlate lab trends with treatment changes. Generate structured question lists before oncology visits. Ask “what changed since my last appointment” and get a real answer. That means getting the data out of the portal and into something programmable.
Chartfold loads EHR exports into SQLite and exposes them to Claude via MCP.
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python
ehr
sqlite
health-data