We don't have a biography for Chief Medical Examiner Dr. Donald "Ducky" Mallard yet. Hang in there, or go ahead and contribute one.
Appearances
NCIS: New Orleans
Guest cast, played by David McCallum
- Episode 1x01: Musician Heal Thyself (Sep 23, 2014)
- Episode 2x12: Sister City, Part II (Jan 5, 2016)