Unfortunately there are good doctors and those who were probably last in their medical school class. When one is not satisfied with a doctor/dentist, don't be afraid of getting another opinion. My husband died from bladder cancer because his urologist said it was just inflammation from a bladder stone. My husband did not see another doctor for this condition for another year and this contributed to his death. When I am seeking out a doctor, I prefer one that is on the staff of a University teaching hospital and I always check their educational background. I look for the best available.