Medicine: The Generalists' General

At 8:30 sharp each morning in a white clapboard house in Milan, Mich., a slim, bald man bounces out of bed, pads into the bathroom, takes up an electric razor in each hand and mows off the night's growth of beard. To Generalist John Sherrod DeTar (rhymes with guitar), 54, new president of the A.A.G.P., this ambidextrous start of the day is just commonsense efficiency. "I have a lot of things to do and I want to save time to do them."

John DeTar's two-fisted approach has helped make him the family doctor's leading...