James Sikking, an actor known for roles on TV shows “Doogie Howser, M.D.” and “Hill Street Blues,” has died. He was 90.

James B. Sikking, known for his roles in beloved TV series such as Hill Street Blues and Doogie Howser, M.D., has died. He ...

James Sikking, an actor who played a hardened police lieutenant on the drama “Hill Street Blues” and the titular character’s kindhearted dad on the sitcom “Doogie Howser, M.D.,” died ...

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.

Emmy nominee James B. Sikking, well-known for his work in "Hill Street Blues," has died from dementia-related complications, and Neil Patrick Harris honored the actor's memory on Instagram.

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.

Neil Patrick Harris remembers 'Doogie Howser' TV dad James Sikking after his death Harris paid tribute to Sikking in a heartfelt post on Instagram Monday.

ACTOR James B. Sikking has died at age 90 following a battle with dementia. Sikking, best known for his role on the series Hill Street Blues, died at his Los Angeles home.

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

James B. Sikking has died at the age of 90, PEOPLE confirms. According to his publicist, Cynthia Synder, the Hill Street Blues actor died "peacefully at his Los Angeles home surrounded by family." ...