You can find his whole slide deck in this link but this slide I think says it all. And it's not opinion. This has been published in many different places and by many different organizations.
http://www.gregoryschmidt.ca/writing/brent-c-james-we-count-our-successes-in-lives-byu-forum
Well I can't paste images so you will see it in the slide deck.
But it explains that 40% of health is behavior based, 30% genetics, 20% is environment/public health, and only 10% is healthcare delivery!
Comparing life expectancy to healthcare spending isn't really fair when it only attributes to 10% of the outcome. If we want to increase life expectancy in the US we need to do something else.