Before the govt started handing out $44k for docs to adopt shitty EHR systems and collect free money. We now have a plethora of shitty EHR systems in hospitals that don't solve any issues at all.
So, the government created this incentive (Which made a few companies insanely rich, like Epic, Cerner, and Athena) - and created this massive siloed data mess. Anyone who has worked in HIT knows what a complete failure this EHR rollout has been on every front.
Even better are the CHIIT "certification" standards (aka, a complete pile of shit) which were to ensure that EHR software met a bunch of standards to get that $44k. One of the hallmarks was "Interoperability" - which to CHIIT meant "systems can communicate with themselves" - derp.
The EHR rollout was a complete failure, mainly due to the govt pushing shit out on the marketplace with their stupid incentives. It is going to take over a decade to untangle the mess of complete crap.