The situation with the janitor being fired for reading medical records was years before HIPAA. Even so, the hospital computer system I used years ago allowed those of us who worked in the records section to look people up, and we were constantly being reminded that our access was because we worked with the medical records, and anyone caught looking people up for any other reason besides business would be in trouble.
Here's one for you: One of my military co-workers, who knew that Mr. Sirius was the one who did pregnancy tests in the lab, wanted me to ask him to move her pregnancy test to the front of the queue. I refused, and reminded her that he could get into a lot of trouble for doing that. He told me she should have known that without me having to remind her.