Sounds like maybe you would be more interested in medical assisting rather than training to be an RN. I've been an CMA for 15+ years. Although I've worked with a few RNs in medical offices, this is...
Vanderbilt University (Nashville) has multiple entry options depending on whether one is already an RN, how much college credit one has, etc. GRE minimum is 1000 with 4.5+ on analytical writing....
It really depends on where you are, geographically-speaking. Here in NC office LPNs don't usually make much more hourly than do CMAs since actually CMA training is more specific for outpatient care...