You are correct. I read an article the other day that said state laws were being changed in many states to allow NPs to open their own office without working with a doctor. They are already able to do this in many states. NPs do get training beyond their RN training.
This will only be a bad thing for patients when they start acting like doctors instead of nurses. Several times nurses have saved family members and even diagnosed things the doctor was having a hard time diagnosing. I know some nurses I would rather have in charge of my care than many doctors.