Earlier quoted context omitted.
The doctors likely have nothing to do with how much procedures bill for. In private practice outside a hospital, they perhaps have more guilt here, but in an ER? They set the prices about as much as the janitors do.
The article mentions an accusation that doctors are “upcoding” procedures to be able to charge more.
Most medical practices employee (or outsource) medical "coders" whose job it is to take the notes written by the doctor and determine which procedure codes should be applied (which then determine what gets billed for)