Employer-based insurance is partially public funded Because of its tax treatment.

So that's several million to start.

by all public entities (mostly the federal government) is around the entire pay of most 1st world countries with universal healthcare.

Government pays over 50%. Per person cost is $8,233. Average for other 33 OECD is $3,268.

Someone also pointed out the tax advantage associated with employer plans. That makes the situation even more insane.

I believe those numbers might have included government employees insurance, the tax implications, subsidies for public and private hospitals, local and state health departments, and on and on.

According to one study, tax-funded expenditures, including tax subsidies, account for nearly 2/3 of health care spending in the U.S.

http://www.pnhp.org/news/2016/january/government-funds-nearly-two-thirds-of-us-health-care-costs-american-journal-of-pub

As a percentage of GDP, our public health care spending is comparable to other countries that have universal health care. (Actually, slightly higher than many of them).

https://datawrapper.dwcdn.net/3bkwn/1/

In that sense, it's really true that we're paying for universal health care; we're just not getting it.