The classics are always good, but I found out the hard way that hospital time is better spent in Schlock City! Some crap novel that you wouldn't normally read, that way if you get interrupted it's no great loss! The last one I read (and I had to do some serious thinking to remember the title) was called "The Cure for Death by Lightning". I did a search and it's by some chick named Gail Anderson-Dargatz. I hardly remember a thing about it now, but at the time it was engrossing and beat the hell out of People Magazine. I read the whole thing in a day, during all that 'hurry-up-and-wait' time between lab/doc/chem. Best of luck.
~JE