Along with his television roles, Birney also had a long career in theater.
Birney’s life partner Michele Roberge confirmed the news to theThe New York Times.
He made his New York stage debut in New York Shakespeare Festival production ofA Comedy of Errors.

David Birney, ‘St. Elsewhere’ and ‘Bridget Loves Bernie’ actor, dies at 83.François Pugnet/Sygma via Getty Images
Birney’s Broadway debut came in 1969 when he performed in Moliere’sThe Miser.
His last known television role was in 2007, when he guested on the police proceduralWithout A Trace.