[prepend]

Every doctor I visit makes me sign a financial agreement before performing services. It says something like “you owe whatever we bill you and if insurance doesn’t pay, you must”

Good luck holding the line, what usually happens is we get stuck with a bill no matter what.

[mindslight]

I generally cross out such nonsense and nobody has ever even commented.

But note that even if you haven't crossed it out, it's still not a valid contract - "whatever number we might pull out of our ass later" isn't defining consideration, plus there is no counterparty signing it.

Such documents are really just part of stage managing the victim for a later shakedown.