You're kidding, yes?
As a clinician using computers in a major hospital I have to smile at your naive optimism. You have no idea what we deal with daily, and I work with recently installed and expensive systems.
In our prescribing system searches/filters only work from the beginning of a list of terms - you can't search on the second word/term. Wildcards are not implemented.
Multiple scrolling windows within scrolling windows - even worse mostly negotiated from Laptops with dodgy touchpads.
No confirmation messages ever: for example, order a blood test and click on "Submit", you go immediately back to the home page. No "order successfully sent" message. Did it go? Wait and see.
A near random position of buttons in screens: "next" at the top, next screen "next" at the bottom, next screen "next" on the right.
No "Print" buttons in one major package, all the print functions are called from buttons saying "Complete".
Labels that become buttons then revert back to labels without changing their appearance in any way.
An almost invisible very pale grey X in a white box as the close button in some windows.
I could add a hundred other basic interface disasters to this list. Medical software interfaces are clearly written by disinterested 16-year-olds doing School projects.