Presumably there are insurance premiums or taxes that you are ignoring.
US healthcare costs are too high in the US because of the broken insurance system. I don't think it needs to become a public system like Europe. I don't see anything inherently wrong with private insurance. But the system needs a reset, back to normal prices.
One of the reason costs are too high is because hospitals, doctors, labs, know that insurance will haggle down so they just overcharge a lot. That's how you end up with an ER band-aid costing $ 500.