We know a couple. They are both doctors with Seguro Social - the Mexican health system. He is in general practice - at a clinica. She is a specialist at a hospital.
They are every bit as educated as a doctor in the US. In fact they attended a University in Guadalajara where a good number of US doctors go to study. I would (and have) trust them with my healthcare.
I would not think of insulting them by telling them they are considered to be practicing "folk medicine" that they are "shamans" - that they are unfamiliar with X-rays, CAR scans or MRIs. By someone who I suspect has never even seen a clinic in Mexico. Maybe even never have been to Mexico?
So...don't be a jerk and listen to people who enjoy saying the sky is falling - even if they have never seen the sky.