I work for a company that I was hoping would be such a disruption point for hospitals (at least in some small way), but instead they decided that it's just too difficult to get hospitals to do much of anything, so we effectively knuckle under -- creating numerous integration points, making more and more copies of data.
The only way this will change is if a large enough player creates direct competition in the EHR/EMR business, with these kinds of data-oriented models in mind, all the while creating a system that, top-to-bottom, is better for both the user, the administrator, and the technical staff. Current players in this space have very little incentive to make their products better. And it reminds me of a quote from Tron Legacy: "Given the prices we charge to students and schools, what sort of improvements have been made in Flynn... I mean, um, ENCOM OS-12?"..."This year we put a "12" on the box."