Yes, I wouldn't go by the USN&WR rankings at all. Program chairs at your school are also good resources. If you aren't a MS IV yet, you still have time to talk to senior medical students who are applying to fields your are interested in.
Also, while interviewing, I talked at length with the residents and other applicants. I wound up calling a few of the residents after I got home to answer additional questions in formulating my match list. Residents at your school or at a program you are interviewing/doing an externship at would also provide you will valuable information. Why not benefit from the research they did when applying?