[0]: https://www.healthsystemtracker.org/chart-collection/quality...
Also, regarding healthcare system quality, one of related statistics from this article are in favor of US: "30-day mortality for heart attacks and strokes is lower in the U.S. than in comparable countries". Same with ischemic stroke(and it's better in US by quiet much, 4.1 vs 6.1 30-day mortality rate per 100 patients in other countries).
I guess it depends where and what and how but me and my friends experiences are very different from what you say, especially after having had experiences with private healthcare in other countries with colleagues where I was present.
CT scan (ct), RMI scan (rmi), endoscopy/colonoscopy/etc (scopes), radiography scan (radio)
This is typical of how the US does things: other countries don't have a perfect solution, therefore we will stick with our much worse solution.
But what "inadequate care" are you talking about?
Do doctors sometimes not give patients what they demand? Absolutely. But that's the way it's supposed to be - it's hard to make rational decisions when your own health, or that of a loved one, is on the line. That's why doctors consult doctors too.