You might be interested in a Freakonomics episode[1] that covers this to some degree. There's a wide range in care based on many factors, but unless you have quite a bit of experience in the healthcare industry in both countries, for similar ailments, I'm not sure what you experienced falls outside the normal variation for the field.

The TL;DL is that the medical field changes quite a bit in the years since Docters graduate, and depending on the types of work they are doing, it seems to be fairly easy for them to get behind with the latest consensus unless they make a concerted effort. To that effect, relatively new doctors often have better patient health outcomes than doctors that have been out of school for longer. This is, to some degree, obvious after stated, as any field that sees rapid change will have some percentage of practitioners that are out of date.

1: http://freakonomics.com/podcast/bad-medicine-part-3-death-di...

I feel there is also a big difference in motivation: reducing harm versus reducing personal blame.

No doctor can be sued for a patient who doesn't see them, so raising prices high, and using it for insurance has the benefit of insuring patients who see you, while those who can't pay aren't your patients, so if they come to harm because they can't afford to see you, not your problem.