Why So Many Bad Doctors?

Dr. Ben Carson, who everyone remembers from the Republican primary as being uninformed and uncompassionate, is Trump's choice for Director of Housing and Urban Development. Now the word is that Dr. Tom Price, who is anti-abortion, homophobic, ammosexual, and who wants to turn Medicare into an underfunded and inadequate insurance system, is going to be head of Health and Human Services.

Does anyone else think it is odd that such horrific people have medical licenses? Dr. Carson, I gather, is at least an excellent surgeon, but I doubt that Dr. Price is even that. Doctors, as licensed professionals, are required to act ethically. How did Price ever slip through?