[notmytarga]

Anesthesia bill is where it should be.
Knee surgery - 3 "base" units - that's the minimum base units, more complex cases have higher base units - carotid artery = 10, Abdominal cases 6-7 etc.
maybe 30 minutes = 2 time units
Total billed units =5
Rate / unit - $80-150 depending on locality and greed. Average is $100-110

So in this case $440/5 = $88/unit - hey maybe this is discounted!

But at 1 time unit, 4 total, it is $110/unit, a likely situation - I'm surprised that they could do all the anesthesia in <20 min. Perhaps bouncing between two rooms such as for cataracts.
The painful part is that Medicare and MediCal pay $50-70 for the same thing.

And note that the facility gets the biggest payment - paying the nurses, equipment, supplies etc.

Because of the way anesthesia is billed with base and time units, doing four 6 base unit cataracts covered by medicare is better than just about any other work assignment.