Berwick is certainly qualified to head a national health care system (for a pro-Berwick piece see the Washington Post). He's also a realist about what that implies. A few years ago he said that sick people tend to be poorer, and poor people tend to be sicker, and if you want an excellent, humane, and rational health care system it is going to be redistributive. It has to be. An excellent national health care system requires redistributing the wealth.
Of course that's true. It's also the last thing Obama wants debated this summer and fall.