I think it is higher than the number of people killed by firearms.
It is estimated that 250,000 people a year are killed by medical malpractice.
32,000 a year are killed by guns, but that includes accidents and suicides.
This claims 440,000 due killed by medical malpractice:
http://www.medicalmalpracticelawyer.center/2014/05/new-study-confirms-440000-deat.html
Iatrogenic deaths are lowballed slightly more than 200,000 a year, maybe 225,000. But some say that doesnt count indirect stuff like deaths by years on prescriptions, etc.
I haven't the slightest doubt about that, and in Canada , the left in Quebec have made physician euthanasia legal.The left in the USA are about to do the same.
If you are over 70 y.o.a., you need to be very specific about your power of attorney and end of life care , and WHERE you will get it, or you could die many years too soon.