Hey, I volunteer at the Lenox Hill ER on 77th and Lex, you only have to put in a min. of 3 hrs a week, but you can do more if you like (I do 1 day/week 9-5) and they have volunteers in all wings from ER to open heart, its good exposure and usualy a good time, their Volunteer Office # is (212) 434-2600, feel free to PM me if you have any questions.