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. Sikking died of ...

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.

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.

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 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 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 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 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.