Not qualified to have an opinion on that, though of course that doesn't prevent me from a back-of-the-envelope calculation:
* A third of US healthcare cost is assumed to be administrative overhead just caused by the current system. "Cutting U.S. administrative costs to the $550 per capita (in 2017 U.S. dollars) level in Canada could save more than $600 billion, the researchers say." [0]
* Median wage level for healthcare workers (everyone directly care-related, i.e. including nurses, technicians and MDs) is $68k, about 5.5M people alltogether. [1]
* With the efficency gain of $600B one could double the headcount of medical practitioners and still be better off as a society.
I'm sure there are large cost savings possible, Canada seems to spend about half as much on administration (17% vs 34%) [1]. While not quite four times as much, that'd still be significant, though whether it's guaranteed to have the same effect in the US is uncertain. Canada and the US may be neighbors, but they're quite different in culture.
* A third of US healthcare cost is assumed to be administrative overhead just caused by the current system. "Cutting U.S. administrative costs to the $550 per capita (in 2017 U.S. dollars) level in Canada could save more than $600 billion, the researchers say." [0]
* Median wage level for healthcare workers (everyone directly care-related, i.e. including nurses, technicians and MDs) is $68k, about 5.5M people alltogether. [1]
* With the efficency gain of $600B one could double the headcount of medical practitioners and still be better off as a society.
[0] = https://www.reuters.com/article/us-health-costs-administrati...
[1] = https://www.bls.gov/oes/current/oes290000.htm