Hemecker died at his home in Glendale, California, on July 10, his family confirmed to Deadline. A cause of death has not been released.
Among the director's best-known television series are "The X-Files", "Blue Bloods" and "Once Upon a Time", as well as "Millennium", "Ghost Whisperer", "The Vampire Diaries" and "Nikita".
He also directed the pilot episode of the series "Roar", starring then-unknown Heath Ledger.
