The medical industry is not a solutions provider. You should view them as a useful tool, but one that still leaves you with the responsibility to utilize the useful tool to solve your problems.
I am not making a normative claim here; I'm making a descriptive one. The medical system is an incredible toolset, but you need to be ready to assemble it into a solution. Maybe it should be a solutions provider. Maybe it's really discriminatory against the people who won't or can't operate this way. No argument. But it observably isn't a solutions provider today, whatever "should" be.
In this particular case, if you care you should have scheduled a followup with a different doctor. ER doctors don't do that sort of analysis.