Smart dentists have their dentists.
  Smart doctors have their doctors.
  Smart Lawyers will have their lawyers.
  That's not to say there aren't some lawyers who have themselves
  as clients because it's likely they do. But they really
  shouldn't. But:
  If I were a lawyer, I wouldn't want a lawyer as a client.
  If I were a doctor, I wouldn't want a doctor as my patient.
  If I were a dentist, I wouldn't want a dentist as my patient.
  Interestingly, Insurance companies have their own Insurance
  companies. I believe it's called Reinsurance Companies. They're
  larger than the planet, that is, if you believe money has an
  equivalent in physical size. researched 'cause I was curious
  myself:
  [1]https://en.wikipedia.org/wiki/Reinsurance
  Lloyd's of London was the first Reinsurance company. That's an
  example. Supreme Court Justice : All other Judges in the USA ::
  Lloyd's of London : Regular Insurance Companies at least in my
  mind. I don't know much about the subject otherwise tongue
  emoticon

References

  Visible links
  1. https://en.wikipedia.org/wiki/Reinsurance