- Jason is older by one minute and was born at 6:22pm.
- Has guest-starred on several episodes of the show Charmed (1998) along with twin brother Kristopher Simmons, playing baby Wyatt from season five up to now.
- Has an older half-brother, Patrick Simmons.
- Parents are Maria and Robert Simmons.
- Is half Ecuadoran on his mother's side and understands Spanish.
- Is older than his twin brother by one minute.
- Lives in Los Angeles. (December 2007)
- Is the twin brother of actor Kristopher Simmons.
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