It's a super interesting topic to explore. Investigating how much bang we get for a buck in medicine is a touchy subject because when I'm ill I want the very best but while I'm fine I'm more willing to consider trade-offs.

Keeping that in mind I think that averaging numbers is not a great representation of doctors impact, the same way average latency isn't a great representation of what users see. What's the 95% percentile of QALYs? E.g. are doctors making one life (e.g. kid with a broken leg as mentioned in a comment here) better for 50 years when 9 people will just never break a leg?

If looking at shifts in distributions the story might (I could not find raw data) look very different.