I don't know what "high tech" you worked in. I have a pretty diverse background and consider myself a hybrid. What the patient sees and what the record contain are, by necessity, different.

I recently enrolled in a master's degree in healthcare systems engineering. There are a few courses that you might be interested in at that level that don't get deep into the systems design side. Other options might include looking at what EPIC offers. Another option would be to look at the situation going on with the VA System and Oracle. That was to be a major upgrade to a 30+ year old Electronic Health Record system. It is a lot of public information that you can peruse.
Best!