Life expectancy doesn't measure quality of healthcare, there are far too many confounding variables like genetics, diet, accidental deaths, etc. No serious study of healthcare quality relies on it.
Look at 5-year cancer survival rates. The US is better (significantly better) in many of them than other countries. A big part of that is access to the latest technology.
https://www.thelancet.com/journals/lanonc/article/PIIS1470-2...