And to think he somehow earned a doctorate...
I may be wrong, but a M.D. is not the same as a Ph.D, especially if earned in a scientific field.
My father spent a career in hospital administration, told me multiple times that most MDs were of average intelligence, no more. The real brainiacs were the specialists and research types.
The average MD got there by stint of hard work in school and amazing memory. Analytical skill is not required. Memorization of minutia is needed, not really unlike lawyers.