And those treatments were never anywhere near $4 million. That "not a bill" just shows the massively inflated negotiated illusion insurance negotiated with the provider. It was never accurate but allows insurance companies to point to it to justify the illusion that they're saving you so much money with their negotiations.

Those bills should be required to also list the cash price, because that's closer to the actual price of the treatment. Sometimes actually less than the insurance negotiated price. With those the provider doesn't need to deal with an insurance company and all the bullshit they also do on the provider side. The insurance companies are terrible to everyone, not just the patient.