<Tr> <Th> Spouse (s) </Th> <Td> Adaline Sohns Heidt (1960--?) (divorced) Susanne Cramer (1967--1969, her death) Dorali Dossantos (1969--) (divorced) 1 child Jan Hagen (1993--2005, his death) </Td> </Tr> <Tr> <Th> Children </Th> <Td> Kristopher Hagen (special education teacher and coach) </Td> </Tr> <P> Kevin Hagen (April 3, 1928--July 9, 2005) was an American actor best known for his role as Dr. Hiram Baker on NBC's Little House on the Prairie . </P> <P> Hagen was born in Chicago, Illinois, to professional ballroom dancers, Haakon Olaf Hagen and the former Marvel Lucile Wadsworth . When Haakon Hagen deserted his family, young Hagen was reared by his mother, grandmother, and aunts . As a 15 - year - old, he relocated to Portland, Oregon, where one of his aunts had taken a teaching job . He attended Portland's Jefferson High School . His family returned to Chicago, and he attended Oregon State University in Corvallis and the University of Southern California in Los Angeles, California, from which he received a degree in International Relations . He spent a year in law school at the University of California, Los Angeles, and was subsequently employed by the U.S. State Department in West Germany, followed by a two - year stint in the United States Navy . For a time he taught ballroom dancing, the specialty of his parents, for the Arthur Murray Company . Then, at the age of twenty - seven, he tried acting . He was spotted in a production of Eugene O'Neill's Desire Under the Elms and given a guest - starring role on the classic 1950s police series Dragnet, starring Jack Webb . </P>

Who played the doctor on little house on the prairie