I can only say that within Kaiser, my HMO, things are awesome since our records went digitized. I can access my test results online, i can go to any center and all the docs can see my whole records, not to mention at the hospital. Now, this is one company and not the whole US. But, having your, say dermatologist/OB/etc, be able to see your whole medical history is pretty awesome and, hopefully, provides a more informed and useful application of their medical knowledge

I hope we don't screw it up if it does go nationwide!