Can a celebrity make you feel better about your doctor?

How does a celebrity affect a hospital waiting room? It's an amazing thing really, as this Time article points out. Even a minor celebrity can turn the usual unpleasant attitudes (who's ever happy to need medical attention?) into much more positive, trusting, and happy ones. People who would normally be eyeing the doctors and nurses suspiciously are suddenly all too happy to trust whatever they say and whatever they're doing, because after all if they're good enough to care for a celebrity they're good enough for the rest of us, right?

Interesting how fame can suddenly inspire faith in a completely unrelated area like health care, and although it's hardly okay I can totally see how it happens. Celebrity endorsements work for everything else regardless of merit, why not medical care?