Ha, funny timing. I’m building a PWA as a side-project that lets me sync all of my medical records from different patient portals in one place. It’s pretty far from being production ready but maybe you’ll find it useful?
https://github.com/fastenhealth/fasten-onprem
If you're interested, I'd love to chat.
I will give this a whirl asap.
Ages ago, I did some integration for prescriptions (what became allscripts, and another company whose name I forget). Maybe I can help there.
And please keep us posted.