I'm not that extremist. My dentist is cool, my childrens' pediatrician as well. I trust them entirely and I know they would never compromise their credibility or my health for financial gain. I always take medicine they prescribe (mostly generic stuff whose patents expired a century or so ago). They always steer me to healthy habits such as excercise and eating fruits instead of taking supplements etc.
Unfortunately, they are the only ones like that I know. Most other I encountered just peddle products for their financial gain. Snake oil salesmen.
I am aware I live in a dictatorship which drove a lot of smart and good people away from the country, skilled doctors and nurses were among the first to go. Hopefully it'll get better once we overthrow the dictator.