Criteria for Choosing a Doctor

Which medical school they graduated from is important, but
the real criteria for selection is where they completed their internship, residency, and fellowship.
If they trained at a "Big 5" hospital, credibility increases.
Training at a university hospital in Seoul is also recognized.
Types that lack credibility:
Moving around between strange/unfamiliar hospitals..
Director of Hong Gil-dong Internal Medicine
Director of Yi Sun-sin Internal Medicine
Training at University 000 in the USA
Just skip all of them..