Insurance and physician fee dispute-physician billing me the difference
My son had emergency surgery and his insurance paid the surgeon the physician provider fee because the surgeon (who is not a provider in our HMO) was on-call for a provider physician according to the Tax ID on the physician's claim to the HMO. The physician is billing my son $700, the difference between the provider and non-provider fee. I've complained to my HMO who state that I am not obligated to pay this bill, but the physican continues to bill me. What recourse do I have to resolve this dispute?