Has anybody ever hired a high powered attorney to challenge medical billing in the US? This feels like something one or two successful lawsuits could change rea

Has anybody ever hired a high powered attorney to challenge medical billing in the US? This feels like something one or two successful lawsuits could change really quickly. Hospitals seem to have done an amazing job of charging just enough after insurance for the upper/middle class to be willing to pay to avoid hurting their credit scores, but so much that everybody else just doesn't pay and files for bankruptcy if anybody ever comes after them.