AspiringDoc,
You're quant score is absolutely amazing, but I will be honest, I think that you should aim to at least get the verbal above a 500 (with your quant, maybe you'd want to aim for a 550, which is totally achievable with a little elbow grease
). I know that some people have gotten in with less than that, and MPH admissions aren't all about scores and rely on a total package. However, even with a stellar application, I would still take the exam again, just to get the verbal score up. Even if your quant goes down, I think that most schools would either average the scores out or take the higher of your exam scores. This is just MHO, and I'd generally take what people say with a grain of salt. However, just to be sure, I'd contact the schools you're planning on applying to and ask them directly about the scores and your chances of acceptance. If it doesn't matter, then don't bother to retake. However, I think that some places will advise you to get that verbal up.
Best,
H&T