Dealing With Doctors Who Accept Only Cash
nytimes.com
nytimes.com
She quit general practice, and became a cosmetic surgeon, with a cool-ass laser. Insurance doesn't cover cosmetic procedures, so she doesn't have to deal with them any more.
The world lost a fantastic Family Doctor because of how insurance handles billing and payment.
There are still salaries (well, singular in this example - the receptionist) plus overheads, training, insurance etc. Sure, the margins are much better in medicine, but buying a $10 book off Amazon != $10 income to Jeff Bezos, and the same principle applies.