Actor James B. Sikking, best known for roles in the TV shows “Hill Street Blues” and “Doogie Howser, M.D.” has died at the age of 90.

James Sikking, who starred as a hardened police lieutenant on “Hill Street Blues” and as the titular character’s kindhearted dad on “Doogie Howser, M.D.,” has died at 90.

James B. Sikking, the prolific, Emmy-nominated actor known for his roles on Hill Street Blues and Doogie Howser, M.D., died July 13 of dementia. He was 90. Sikking died at his Los Angeles home ...

James Sikking, best known for his roles in shows like "Doogie Howser, M.D." and "Hill Street Blues," has died at the age of 90 of complications from dementia.

James B. Sikking, known for his roles as Lt. Howard Hunter on “ Hill Street Blues ” and the titular character’s father on “ Doogie Howser, M.D.,” has died. He was 90.

Actor James Sikking, known for his work on 'Hill Street Blues' and 'Doogie Howser,' has died of complications of dementia, his publicist confirmed. He was 90.

Hill Street Blues, an MTM Enterprises series, is produced by Yerkovich and David Anspaugh. Executive in charge at MTM is Abby Singer. — Gail Williams, originally published on Nov. 3, 1981.

More When Hill Street Blues ended in 1987, after seven seasons, he continued to work. Most notably, he joined Doogie Howser, M.D. in 1989, alongside Neil Patrick Harris as the titular prodigy.

James B. Sikking, known for his notable leading roles on Hill Street Blues and Doogie Howser, M.D., has died at the age of 90. The actor’s death was caused by complications related to dementia ...

Actor James Sikking, who had television roles on "Hill Street Blues" and "Doogie Howser, M.D." has died from complications from dementia. He was 90-years-old.

Actor James Sikking, who had television roles on "Hill Street Blues" and "Doogie Howser, M.D." has died from complications from dementia, according to his publicist Monday. He was 90.

“Hill Street Blues” actor James B. Sikking pictured in January 2011. “I thought there was great depth to the character because he was a very lonely guy,” Sikking told CNN in a 2014 interview.