Yeah, I'm going to call BS on this. I work in the Mental Health Industry and I've gone through the hurdles that exist to using iPhones in the health industry and they're significant. From documentation to security of data it would take a lot of effort on Apple's part and that effort would be contrary to their established culture (Government likes open solutions from companies that bend over backwards to accommodate)
I have no doubt it's something Apple's considered. The one place Microsoft's TabletPC has gotten any kind of traction has been in hospitals. But Apple's culture isn't conducive to meeting Federal guidelines and that's not something that can be changed on a dime.
(Also, the sheer fact that he mentions the Obama administration shows this guy doesn't know much. Government sadly doesn't move that quickly so rushing to market with a tablet would put it out there years before any action the Obama administration takes would go into effect)