In Boston, the best places would probably be BWH and MGH...Partners Healthcare is huge in terms of CPOE/EMAR/etc. When you start looking at residency, you'll find some places with actual residency; Cedars-Sinai and Vanderbilt are some that I ran into with specific rotations/residency in that area.
As an RPh you really wouldn't be working on software (like writing code) unless you came from a CS/IT background. From what I experienced, you're more like a liason between the computer people and the clinicians, maybe knowledge management, working on databases, clinical alerts, etc.
I think a lot of students think it's boring and lame, but any hospital with various interfacing systems and any interest in med safety needs people in this area.