I've been searching, and I can't find it.
There are elements of it that are easy to track down.
Medicare costs around $450 billion/year
Medicaid costs around $360 billion/year (federal and state)
Corporate taxes foregone due to group insurance plans costs around $225 billion/year
VA healthcare - $40 billion/year
DOD healthcare - $40 billion/year
So just via those, taxpayers are spending $1.12 trillion a year on healthcare. And that's not including all theh various government employee healthcare plans out there, from the Civil Service (about 1.3 million civilian federal employees) down to local school districts (about 3 million teachers, administrators, and facility management personnel).
Not to mention a lot of State AG office attorneys, county wastewater treatment plant operators, and city dogcatchers inbetween.
Hell, you could even step out a secondary step, and talk about how much we pay in taxes so that various private companies that provide services primarily to government.
The healthcare debate has been framed publicly in a way that just talks about how 59% of Americans are covered by employee provided insurance. I have NOT heard serious discussion of how much that 59% is directly costing taxpayers as well.
But I have to think it's out there. Can anyone help me out?