I agree strongly with Greg and Zeev. When medical problems arise you MUST do your own reasearch/dd...think about what you learn, ask the right questions and then make your own decision. A "great" doctor,[there may be 5-10% great doctors] will be invaluable. Sadly, and this is personal, most doctors do not fall in this group. Picture a bell-curve; a few great docs, a few terrible docs, and many avereage docs. Seek the best doctors.