Those things aren't being done with the EHR data, at least in the real world yet. Those benefits aren't being realised yet (which is far more likely due to regulation of the data rather than EHR uptake). To doctors, an EHR is just a replacement for paper with a clunky, hard to use interface. It's hard to beat the flexibility of paper.

From what I've seen from EHRs and other related software, they're absolute garbage to use. I wouldn't want to use one either.