Ford Brewer MD MPH started his medical career as an ER doctor. But most of the problems bringing people into the ER could be prevented. So he went to Johns Hopkins to train in Preventive Medicine. He did well and ended up running the post-graduate training program in preventive medicine.
Since then, he's published dozens of medical science articles and run several medical staff programs with over 1000 doctors, NPs and PAs. He's run major programs for Toyota, Kroger, Premise, and dozens of other companies.