Hospital costs for the uninsured or underinsured at institutions such as MD Anderson may indeed be outrageous, but this has little to do with the problem addressed by the editorial: $100,000+ prices for cancer drugs that extend life very modestly.
Medical cost inflation - found the following article on medical costs (I believe part of a series at the NYT), and apropos of the above, it notes that medical costs are driven first by hospital costs, second by md's. It also gives some stats on md earnings inflation (much faster than inflation for decades for many (probably all) specialists - and even for laggard traditional GPs).