You've literally described the current healthcare system in the US. Minute Clinic/NPs/PAs providing front line care. It doesn't appear to be working well based on how our country's healthcare system ranks against other industrialized nations.
It seems to me the US healthcare system sits in this weird gap where it's not funded by private individuals, but it's also not publicly funded (excluding medicare/medicade/VA/tricare etc)
So it doesn't benefit from efficiencies of a single-payer system like the UK has, and it doesn't have to obey proper market forces either, since you have a bunch of for-profit entities in the middle, but the costs are obfuscated from the consumer unless you're unlucky enough not to have employer-funded health insurance.
So until you fix those core issues, I don't see how technological advancements are going to have much of an effect either positive or negative.
It's an orthogonal issue.