IMO...
1. Wash U-Given your goals, epilepsy is very strong there, big EMU that is going to expand even more, residents have solid EEG skills as they read their own stat EEG's/any overnight EEG/cEEG. Also lots of ictal spect and other neuro-imaging for epilepsy, grid placement/defining seizure focus for surgery, intra-op, good relationship with neurosurg. Current class sending someone to UCSF for epilepsy fellowship.
2. U Wash/Cornell/Yale/UCLA-I only interviewed at Yale and Cornell so that's my limitation. Yale has a good, well known epilepsy group that is one of their strongest sub-specialities. For any of these, don't hesitate to email the PD or other people involved in epilepsy to get a more specific idea of their setup. Questions you want to ask are 1) EMU 2) Amount of resident involvement with EEG group 3) Who reads the EEG at night 4) where people do fellowship.
Big city-nobody can beat the upper-east side if you have the $$$$ to live well. I'll leave that to your preference.
Global health-hopefully you got some sense at these places if residents/faculty spend any time abroad or with refugee populations. Certainly NY would give you easy access to this without traveling abroad. Can't provide much useful info on this outside of my home institution if you want to PM me about it. Hope this was useful.