Health "insurance" companies are incentivized to raise the cost of care. Why? Their profits are capped to a percentage of the cost of care. The only way for them to make more money is to have more revenue -- which they do by increasing the cost of care!
The difference is that if a bakery tries to charge you a ridiculous price, you can politely decline tu buy, or buy and promise never to return.
The buyer gets to say they negotiated. The baker doesn't have to look you in the eye when they gouge you.
It gets a little more complicated,though. Instead of just paying $400 for the loaf of bread, the buyer bundles the cost of all the purchases together, and then charges a monthly fee, based on the previous year's overall revenue. They then tack on 20%. So, it turns out, with that extra 20% you're actually paying almost $500 for the loaf of bread anyways.
Is it a scam?
Yes, it's a scam.
What did you think the farmer who was charged $6,589.77 for 6 stitches might have to say about that proposition?
> any healthcare procedure that is not typically covered by insurance
Which I (not American) assume stitches in the emergency room are.
Why do you think this discrepancy occurs?
> who was charged $6,589.77 for 6 stitches
is relevant when OP was talking about procedures NOT covered by insurance.
In my opinion, getting away from the fee for service model is one of the routes we ought to be taking to address healthcare spending in the US (if you're charging per service, you're incentivized to perform as many services as possible in a given encounter).
Contractors, many of whom are small businesses or individuals, do this all the time. They also give estimates like "If we find mold behind the wall, it will be an extra ten thousand".
Medicine is also odd in that you have to pay for the doctors mistake. If the doctor prescribes a less effective drug, it has no effect and then after doing your own research find a better drug and get the doctor to prescribe that instead. You still have to pay for the first visit. If a plumber decides to go from plastic to copper pipe mid job, he doesn't get paid for the work he ripped out.
Multi billion dollar hospital groups, full of highly educated professionals apparently can't pull this off but the guy who poops in a bucket on the job site can.