As a cancer survivor I always tell people who have been diagnosed this piece of advice:
"First thing to do, get a second opinion"
Here's another suggestion.
If you're being treated at hospitals that receive poor ratings or grades, find a new healthcare provider or at least get a second opinion.
Everyone being treated for any serious ailment needs to be their own healthcare advocate.
If you're not strong enough to advocate for yourself then recruit a family member or a friend to help you navigate the healthcare industry.
In my experience it's the only way to receive the great care you deserve.