There are some...check with your school's financial aid department, Johnson and Johnson and the NIH. A lot of those that seem to cover the most tuition cost have a post graduation requirement ( i.e. working in an underserved area,teaching, etc.). I was fortunate to get a full ride for my BSN, but now I'm paying the standard $600/quarter hour.
I will be paying for grad school for a very very very long time. Good luck!