What happens to US GDP if healthcare is “fixed”?

A huge portion of US healthcare spending is on poorly utilized clinical resources (500/hr cardiologist helping someone with common side effects) and the admin overhead required to operate these bloated care/ insurance systems.

Imagine in 5 years' time we have the technology for a single doctor to care for 10,000 patients and average 90th percentile outcomes. Let's say the cost for that doctor is some flat rate like $50 a month no insurance involved.

Let's also say, the insurance companies are relegated to catastrophic coverage and aren't involved in anything that isn't top 5th percentile shit shows.

Simply put, imagine we've effectively reduced 90% of the clinical and 90% of the insurance/ admin overhead. What happens to GDP?

I'm assuming it goes down. Is it possible we're in a "recession" but the health purchasing power of US citizens goes up?

Has this happened in other sectors before?