I think you need another one from your professor. Law schools want recommendations to evaluate your academic ability, and that's why emphasis is put on professor recommendations. You should definitely ask your professor. Also, they don't care about the "status" of your recommenders. It looks like you're trying to choose recommenders that look good, instead of picking ones that will make you look good. Not that the prosector (did you mean prosecutor?) and VP of the hospital won't give you good recommendations, but I think you might be assuming that having "better" people write your recommendation will mean a better recommendation in the eyes of a law school, and this isn't necessarily true. Thus- ask another professor. If you have a professor that you have a better relationship with, pick him/her over the one with the JD.