This obituary is part of a series about people who have died in the coronavirus pandemic. Read about others here.

Mark Blum, an Obie Award-winning New York stage and screen actor whose roles ranged from highly flawed husbands to overconfident blowhards, died on Wednesday in Manhattan. He was 69.

The actor Lee Wilkof, a close family friend, said the cause was complications of the coronavirus. Mr. Blum also had asthma.

Mr. Blum was an omnipresent figure in the Off Broadway world for decades, but his biggest moment in the spotlight came in 1989 after he played a time-traveling 20th-century playwright who befriends Gustav Mahler, in the Playwrights Horizons production of Albert Innaurato’s “Gus and Al.”