epic is one of the critical programs
Okay but they... It... At least the back end works on Linux? Or did twenty two years ago, since before some of your younger staff were probably born, according to the first result of my single web search? I think the front end does too? You know computers with different operating systems can talk to each other, right? Yeah you should be sure, and that's why you set up a test computer in a back room somewhere to be absolutely personally sure.
I understand that its not your decision, I, um, can't refute that part (I'd like to argue it though? For fun?)
Maybe the entire regime of 'ownership' especially of such an important public utility so many people rely on, like a fucking hospital cannot, in real terms, be privately owned? It is the property of the people, of the community it is in, and as such, and as that it is the year of the Linux desktop, you should be conducting a covert assassination campaign against windows partisans on the IT staff and gradually reclaiming that department for the people while making absolutely no other changes to things like billing or scheduling or policy regarding unhoused patients.
Then, when the unbelievers are purged, quietly install Linux with cinnamon on people's computers, until it has finished, and you are victorious. Reap the software licensing fees you would have paid to Microsoft and 5% efficiency gains in one hospital to jump start the revolution from there. Use it to build a concentration camp for landlords, then...