$10,920 for room charges is absolutely ludicrous.
About 5 years ago, I had 6 weeks in hospital, a total of 3 angiograms, one MRI scan...and then 5 stents (should have been 4, but they tore something and had to put in a covered one!).
The wait was mainly down to an unfortunate series of events: One stent was needed in a 'tricky' place and so I was timetabled to be operated on by a specialist surgeon elsewhere, but his father fell seriously ill so he went on leave. My first op was rebooked for another hospital...and they had a 'flu outbreak so ops were postponed. Eventually I was booked in elsewhere had a one hour ambulance transport ride for 'third time lucky'.
The stents were fitted in two separate operations about two weeks apart. The most notable expense I incurred was for data top-ups on my cellphone because hospital wifi was still being setup and hadn't quite made it to my ward.
The NHS gets a lot of flak, and it's by no means perfect, but it's generally there for you when you really need it.
PS: I'm on a slew of meds for my heart condition and T2 diabetes - all free at the point of collection.
I'm asking because a friend was in the hospital in the bay area for 7 days and his room and board was approximately $21,000
In regard to your friend ... his 7 x 2 = $14k. That's a LOT for basically a bed, blood draws daily, limited TV and cafeteria food, but in the center of Los Angeles, that's what you get.