I believe it. In my 40+ years of dealing with the medical profession, Dr. Google, Dr. Wikipedia, & Dr. Pubmed have wiped the floor with them, time after time. If you get sick, do the research. I can almost guarantee that it will pay off.
And these days, medical research is excellent--if only by volume. I know people here like their canned responses--"small n!", "in mice!", "correlation != causation"--but when you're trying to make a diagnosis, every little clue helps!
I can't honestly attribute excellence to the typical medical practitioner.