Hate to be cynical, but going by the stories a doctor in my personal circles tells me, "talked to me for an hour, ordered a ton of tests" could be more about billing the national healthcare fund for many tests, that may not be most useful, but carry best margins for the facility.

In my country, there's a big feud between cardiologists and radiologists right now, big enough to be a regular topic in national media. Inside sources tell me it has nothing to do with quality of care, and is entirely about the march of technology allowing radiologists to perform some diagnostics that previously required cardiological procedures, and those procedures happened to be the major funding source for the cardiology departments.