Jerome Groopman is a doctor who discovered that he needed a doctor. When his hand was hurt, he went to six prominent surgeons and got four different opinions about what was wrong. Groopman was advised to have unnecessary surgery and got a seemingly made-up diagnosis for a nonexistent condition.
Groopman, who holds a chair in medicine at Harvard Medical School, eventually found a doctor who helped. But he didn't stop wondering about why those other doctors made the wrong diagnoses. You can listed or read his interview from the link below.