Bringing the price of healthcare down simply has to do with increasing the supply of healthcare providers and medicine. Technically, I guess the nation could also work on reducing the demand side of healthcare by promoting better diets and exercise, but I won't hold my breath on that one.

The prior is already happening with the introduction of PA and NPs taking over roles that MD/DOs used to do (for better or for worse, I've seen many discussions on how PA/NP education is very lacking and the bar to qualify is too low, which I agree with).

I don't know much about increasing supply of medicine, but that probably has to do with patent reform and/or FDA approvals for slightly modified medications.

There's also probably something about liability and litigiousness that is a factor of higher prices in the US.