/sci/ - Science & Math

Hey /sci/, I'm about to graduate high school and I'm going to college next. Although I always understood the material, I never took anything but on-level chemistry and biology courses, but recently I've become interested in doing primary care medicine after looking into the state of health in the US. I'm excited to start studying in college, but I was wondering how much impact I could actually have on public health as a physician. As a potential member of that field, is there a large impact to be made if I'm passionate about health?