I built an open source tool for pulling your own EHR data and querying it with an LLM. Looking for early users and feedback
After outpatient eye surgery a few weeks ago, MyChart pushed me the intraoperative note within hours. I've worked in healthcare my whole career and I still didn't fully understand what I was reading. So I dropped it into Claude. It explained the procedure and flagged that my surgeon had improvised mid-operation in a way I would have completely missed.
That moment did something the phrase "give me my damn data" never quite did for me. It made the knowledge-and-power thing concrete. Data you can't read is paperwork. Data plus expertise is standing.
So I built OwnChart. Open source, self-hosted, patient-owned. It pulls your record from most major EHR patient portals (Epic, athenahealth, Oracle Health, NextGen, ModMed and others), brings in HealthKit and wearables from the iOS app, lets you attach photos and life events, and lets you chat with all of it.
You pick the LLM vendor and model. Your data stays on infrastructure you control.
It's in alpha. It is not trivial to install. The README is honest about which EHR vendors are easiest to register with (Epic is essentially auto-approved; others take 1-2 days of review). I'm looking for the curious, the technical, and the brave.
- Code: github.com/nickpdawson/OwnChart
- Site + demo: OwnChart.me
- iOS preview on TestFlight: https://testflight.apple.com/join/z8QemcTe
Major inspiration and architectural credit: Hugo Campos's (huge tour de force in the ePatient movement) OpenKP and his Critical AI Health Literacy skill, which OwnChart uses as a foundational prompt layer so the LLM behaves like an empowering clinical expert.
Happy to answer questions, take bug reports, or debate about the design choices.