Find another job SOON first and get your ducks in a row and then quit. Hopefully you didn't sign anything that can tie you in. Just tell them that you either are a NP or your a RN but not both. If they don't listen to you, then they do not value you or respect you. No ifs, and & buts. Besides why stick around being a RN when you can become a NP. Why don't you tell those docs to recover their own patients as well? They are just really taking advantage of you. Trust me, I've been in the same situation once where they tried to use me as a RN. I didn't hesitate to say anything (but of course, I was traveling back then).