
Kevin Hagen (April 3, 1928 – July 9, 2005) was an American actor best known for his role as Dr. Hiram Baker on NBC's TV series Little House on the Prairie.
Hagen was the son of professional ballroom dancers, Haakon Olaf Hagen and Marvel Lucile Wadsworth. His father abandoned the family when Kevin was five. He was raised by his mother, grandmother, and two aunts, with some help from his uncle, a physician. The family moved to Portland, Oregon, when Kevin was a teenager. He played baseball and football at Jefferson High School. He attended Oregon State University before enlisting in the U.S. Navy after World War II; he served in San Diego.
Hagen, married four times, was a single parent for two decades to his son, Christopher Hagen, a Special Education teacher and high school baseball coach in Bakersfield, California.

The Ride to Hangman's Tree
1967 · as Prisoner (Uncredited)

The Ambulance
1990 · as Cop at Stables

The Hunter
1980 · as Poker Player

Pork Chop Hill
1959 · as Cpl. Kissell

Shenandoah
1965 · as Mule - Rebel Deserter

Rio Conchos
1964 · as Blondebeard

Power
1986 · as Cop

The Delphi Bureau: The Merchant of Death Assignment
1972 · as Luke

Little House: Look Back to Yesterday
1983 · as Dr. Hiram Baker

The Last Challenge
1967 · as Frank Garrison

Little House: Bless All the Dear Children
1983 · as Dr. Hiram Baker

Prologue to Wounded Knee
1973 · as Ken Shaeffer

Weekend of Terror
1970 · as Lieutenant Papich

Little House: The Last Farewell
1984 · as Dr. Hiram Baker

Honky Tonk
1974

The Learning Tree
1969 · as Doc Tim Cravens

Rider on a Dead Horse
1962 · as Jake Fry

The San Pedro Bums
1977 · as Mr. McClory