Nitpick, but $1M in unpaid bills is nowhere near $1M in costs. Obviously this is still a troubling result but in all likelihood it was less than 10% of that in actual costs and the costs weren’t in fact borne by “the taxpayer” but rather by slightly inflated fees for everyone else, since US hospitals must bill according to an assumption that some percentage of bills will go unpaid, due to the relationship between themselves, the insurers, and uninsured patients.