That all sounds pretty cool in the title, however, the linked doc says:
"The overall annual costs of this single-payer system for California would be $331 billion as of 2017. "
The same document also states:
"At present, California’s health care system includes 33.4 million people (92.5 percent) who have some form of health insurance coverage and 2.7 million (7.5 percent) who are uninsured."
That would be a total of 36.1 million people.
That would be a cost per capita of $9100. Apparently in 2016 the US healthcare expenditure were $9024 per capita. Now i didn't go thru all of the 85 pages so i might be missing something.