We spend double, as a percentage of GDP, what any other rich country spends on health care, so that's not it.
There may also be an aspect of funny cost accounting there. One reason given for the rather high medical salaries in the US, for instance, is the fact that trainee doctors, dentists, etc tend to incur truly horrifying levels of student debt.
> Now, [US] physicians graduate with a median $194,000 in student debt.
This generally isn't the case in most developed countries, but in that case the state may be spending more on _education_.