Gonna post before reading (mistake alert), but was just reading The Patient's Playbook by Leslie Michelson and it begins by talking about what a clustercuss the US healthcare system is.

You'd think your primary care physician would know what medications you are on, and what specialists you'd seen, but they don't work like that unless you laboriously tell them everything you received when they weren't staring at you. It's inefficient to say the least. And it's borderline negligent too.