I guess it depends on your comparison - that article didn't include Australia, NZ or Canada.
Also if you factor in earnings and expenses over a lifetime (including cost of studying and the fact that many of the countries mentioned have free healthcare and education and far lower insurance requirements) it evens out substantially.
More importantly, even the highest physician salaries are orders of magnitude less than insurance company CEO salaries.
Disclosure: I'm a physician, currently practicing in the US, previously in New Zealand and the UK.
Also if you factor in earnings and expenses over a lifetime (including cost of studying and the fact that many of the countries mentioned have free healthcare and education and far lower insurance requirements) it evens out substantially.
More importantly, even the highest physician salaries are orders of magnitude less than insurance company CEO salaries.
Disclosure: I'm a physician, currently practicing in the US, previously in New Zealand and the UK.