His father was born in Afghanistan to an Afghan Jewish family. His mother, who was raised in New York, is of Ashkenazi Jewish background from a family of Holocaust survivors.

He was confirmed to be under consideration to play Quasimodo in the future live-action adaptation of The Hunchback of Notre Dame as of 14 July 2019.

Nominated for a 2011 Tony Award for Best Performance by a Leading Actor in a Musical for his portrayal of Elder Cunningham in "The Book of Mormon".

Graduated from Carnegie Mellon College of Fine Arts, School of Drama, with a BFA. (2003)

Attended Carnegie Mellon University with Josh Groban.

Godfather of Theo Gabel, son of Seth Gabel and Bryce Dallas Howard.

Won the National Forensics League National Tournament Championships in Humorous Interpretation and Original Oratory in 1999.

Ida Darvish, his wife, gave birth to his second child, a daughter Isabella Eve Gad on 17 February 2014.

Ida Darvish, his wife, gave birth to his first child, a daughter Ava Tanya Gad on 3 August 2011.

Best friends and high school classmates with Dirty Sexy Money (2007)'s star, Seth Gabel (Seth Cosentino back in high school).

Attended the University School (FL).