You have a good pedigree, step 1, and research background. Clincal grades are good, but not great. Sounds like you want a place with strong basic science research.
In the northeast, I think you should consider Penn, NYU, and Brown. All 3 have strong clinical experiences as well as abundant basic science research resources. You may want to consider the 6-year research tracks at NYU and Penn. Jeff is mostly clinical outcomes research. Tufts is not very research oriented. Columbia is probably somewhere in the middle, but I think the operative experience here is not as good as some of the other places I mentioned already. If you are willing to go outside of the northeast, think about Hopkins, Pittsburgh, and WashU. Again, good clinical and basic science research experiences.