What fact checking I've seen done (including my own) finds that it's mostly on the up-and-up. Some facts have been cherry-picked to highlight disparities, but that doesn't mean there isn't an issue. It's a big problem.
The U.S. medical prowess is the best in the world -- the issue is affordable access to that greatness.
I, for one, don't want to see another bloated government bureaucracy. I think there is an opportunity to have a unique American solution to this problem that takes lessons from the European and Canadian models, but infuses some ingenuity to ensure access not just to check-ups, but also other forms of care that Americans can schedule next week but Canadians have to wait months for.