This is what we're doing at Patients Know Best (https://www.patientsknowbest.com https://www.patientsknowbest.com) -- we are giving patients an aggregated view

This is what we're doing at Patients Know Best (https://www.patientsknowbest.com https://www.patientsknowbest.com) -- we are giving patients an aggregated view of their medical data and we're interfacing with many providers. As many of you mentioned, the major issue is to solve is the subtle, but important differences in vocabulary. Even if providers can export data in "standard formats", those standards are often not specific enough so you need to build something that can translate between them. This is a though and fiddly problem, there's a reason why Google/MS/etc. have all bailed out. You can't just build something once and let it scale for the whole healthcare system.