Could anyone please explain how obtaining a dual residency would affect incentive pay/board-certified pay? For example, because I will have earned an MPH in epidemiology before attending medical school, the time it would take for me to do a preventive medicine residency is pretty short. My mentor was a career Army doc, and was board-certified in both internal medicine as well as preventive medicine (I'd ask him this question, but he's out of the country). Does anyone have any idea how this would work in general for the military? If there is a difference between services, please elaborate--I'm primarily interested in the Army. I appreciate your help.