My sister, who also graduated from Northwestern, had a similar MCAT as you. Actually, the only thing different was the physical sciences section (she got 1 pt lower). She had a 3.9+ GPA and majored in Bio, but she submitted her amcas really late (I think in October), which really hurt her. Nonetheless, she still got interviews at schools like NYU and UChicago (though she got waitlisted at both). She got accepted into UIC and Rush, though.
I don't think it will hurt you. But it really depends on when you apply (applying early is best) and where you wanna go. The top-10 schools may be a long-shot, but I think top-25 and top-50 schools are definitely within your reach.
Also, in response to the previous poster, I actually wouldn't really consider Northwestern. Northwestern doesn't seem to accept many people from the undergrad unless you have spectacular scores since they have so many NU students from the HPME (BA/MD) program. i also don't know about retaking the test. Your science scores are excellent, and if your verbal score hasn't budged for the last 3 times that you've taken it, then it's probably best to keep your score. Your score is excellent - it will get you into med school. Just choose wisely and apply early!