[bpatrianakos]

They won't do it on their own because there's really no incentive to make this information easily accessible. Healthcare is like Microsoft and Oracle in the 90's. Everyone wants you locked in to their platforms and services. Add to that the fact that you're constantly dealing with incredibly sensitive information on the level of financial data (arguably even more sensitive) and it gets worse. In finance you have PCI compliance to deal with. It's tough but not as crazy as $50k fines for every instance of leaked data with HIPAA.

[webjprgm]

It may not be deliberate attempt to lock customers in, but just the first part of what you said: there is no incentive to make this any easier. It basically works, so hospitals/clinics that need to make a few simple customizations can do so with REST API calls but it isn't easy enough for third-parties to quickly and easily build large applications. There's so much going on in healthcare that it is hard for big vendors to justify cleaning up their web services over doing other things. Especially when the "interoperability" buzz fits in better with supporting FHIR, CommonWell, Healtheway, HL7, etc.