connecting MyChart to Apple Health?

This is an old question, but I'm working on this as well, so first what should be the answer:

Yes, at least for most organizations that use MyChart, although you do this through the Health app not the MyCHart app.

If you go to the Apple Health app, under the Browse tab, and scroll down to the bottom, it should have a section for external accounts. Tap Add Account, then search for your specific organization in the list. It won't show MyChart by itself, there's an item for every org that uses MyChart, and I believe you need to select the one that you're using specifically. Once you select the organization you should be prompted with a MyChart login, and once authorized Apple Health should download everything existing and new.

That said, after years of working smoothly, my account stopped syncing some time between February and April this year, and I'm now unable to get it reconnected--I just get the completely unhelpful message "An error has occurred." when I get to the login step in Apple Health, and it's a dead-end from there. Not even any help that I can find.

Hopefully others have better luck than I do.

I have connected several of my medical institutions with Apple healthcare. They are also on MyChart. However, Novant Health is on MyChart but not on the list of linkable providers on the Apple Health app. I think the provider has to opt in.