Good News! Unless something has changed since I worked in healthcare IT, those systems are far too old to be impacted!

I'm half-joking. I don't know what that kind of equipment runs, but I would guess something embedded. The nuke-med stuff was mostly linux and various lab analyzers were also something embedded though they interface with all sorts of things (which can very well be windows). Pharmaceutical dispensers ran various linux-like OS's (though I couldn't even tell you the names anymore). Some medical records stuff was also proprietary, but Windows was replacing most of it near the end of my time.

One place we had ran their keycard system all on a windows 3.1 box still. I don't doubt some modern systems also are running on Windows which has interesting implications for getting into/out of places.

That said, a lot of that stuff doesn't touch the outside internet at all unless someone has done something horribly wrong. Medical records systems often do, though (including for billing and insurance stuff).