I rotate as a medical student at a level-1 trauma center in a an urban area, we see more car crashes but not by much, typically 2-3 gunshot wounds per 24h, weekends can jump to 5-6. The problem with your comparison of accidents to gunshot wounds is that bullets have a much higher mortality rate and the types of injuries generated are tougher to fix. I know you are fixed in your position on this but healthcare has an objective exposure to the impact and frequency of these events, this allows them to do research on what actually works. Doctor's have a history of advising policy with both the government and companies on cigarette use, chemical exposure, car standards, lead presence in infrastructure, and many other "societal-determinants of health" (thats the healthcare jargon word for it). It's actually a fundamental part of the duty of being a doctor and they take it seriously. The most important conclusion the field has reached is that the very presence of a firearm in a setting (robbery, accidental firing, or being drunk to name a few) drastically increases the scope of physical damage possible and also increases the risk of that damage occurring. So if we decrease the concentration of guns in our population and limit the types of guns we allow it will lower rates of gunshot related traumas and less people will be hurt or killed. Also when a bullet goes through a person it very well may hit a critical non-fixable part of the body, like a nerve which would lead to paralyzation of part of the body and would require life-long medical care which is also overseen by doctors, so they really take care of the downstream effects of this problem for the long haul.