I know that in the DC metro area they do. You have to be a senior and apply for a "scholorship." Basically for each year you work for them they will pay for so much of your student loan. For instance I believe that Georgetown pays 10k per year. Most range around 5k per year. Some require a two year commitment. You basically need to call all the hospitals you are interested in, speak to human resources, ask for the nurse recruiter. Ask her/him if they have scholorships for last year students and if they will pay your loans for time served. Each hospital is different so make sure you call around and get all the information. Another thing too is some hospitals will actually let you apply in the area of work (ER, NICU, etc) you choose and some don't so be careful.
Hope that helps.