https://www.latimes.com/business/story/2019-07-29/column-could-our-healthcare-system-be-any-dumber
All healthcare providers should be required by law to publish all prices and offer uniform prices to all patients regardless of payment method.
Or better yet don’t add a new law to patch old laws. Remove all laws limiting competition in healthcare (including patents on drugs and treatments). Then the free market can actually work and drive pricing that is very low.