"Physician incompetence kills more people than guns"
You got that right. In many "civilized countries" the medical and pharmaceutical industries take a terrible toll. The US and Australia had something like 1 in 9 or 1 in 11 of all deaths due directly to the actions of a doctor, nurse, pharmacist or related fields. That is many times the deaths due to guns, cars, telemarketers combined.
Could you perhaps provide some links to studies supporting such a claim?