The bill is crazy, but this person won’t have to pay a 10th if it if they call the billing department.
Being uninsured is actually something of a blessing in the United States in this situation. If you have health insurance (often with bad coverage and high deductibles), you’ve agreed to waive your ability to negotiate and to pay whatever bill they’ve sent you.
Not so for the uninsured.
The whole billing system in the United States is beyond fucked up.