I haven't had the opportunity to try many of the renowned midwestern IPA's since they don't make it to anywhere I have lived in the past 5 years (Portland, NYC, and various places in California). But having had just about every IPA that can be easily found in NYC, Portland, and California; I am well aware of the different coasts' styles. Near as I can tell, when a really dry, hoppy, aromatic, dry-hopped IPA is brewed on the east coast, it is credited as being "west coast" and people on the east coast claim it as superior to the 4-month old bottles of Stone IPA or Pliny that they bought at their local market.
The gold standard of the East Coast IPA (at least in terms of availability in the northeast) is Harpoon IPA. That is a refreshing beer, but at about 6% ABV and being just barely hoppy, it would be considered a plain American Pale Ale on the west coast. That's not to say that there aren't east coast breweries who make bold, hoppy, clean, dry IPA's, but the general make-up of the style is less hop-forward on the east coast. I don't think yeast has as much to do with it as some would argue - Deschutes manages to make plenty of fine hoppy beers with their English yeast and I know plenty of other west coast breweries that do the same thing. I think it is really all about dry hopping, hop choice, and quantity of hops used. If you brew an IPA that looks like this (for 5 gal) then you are brewing an east coast-style IPA regardless of where you are:
90% 2-row
5% crystal
5% carapils
40 IBUs worth of Centennial @ 60 min
.5 oz Cascade @ 30 min
1 oz Cascade @ flameout
Mash Temp 152F
OG 1.060, 55 IBUs, 6.1% ABV
And if you do this, you aren't:
90% 2-row
5% Munich 10L
5% Carapils
30 IBUs of Summit @ 60
20 IBUs of CTZ @ 30
20 IBUs of Amarillo @ 10
3 oz Citra @ flameout
2 oz Citra/Amarillo/Simcoe dry-hopped
Mash Temp 148F
OG 1.067, 70 IBUs, ~7% ABV