Ellis had sprained his right ankle landing on Drew Butera's catcher's mask while celebrating Josh Beckett's no-hitter in Philadelphia on May 25. It was Ellis' second stint on the disabled list this season. He had left knee surgery in April.
Ellis went 1-for-2 with a run scored and two walks in the Dodgers' 4-3 win over the D-backs.
The Dodgers optioned Tim Federowicz back to Triple-A Albuquerque to make room on the roster for Ellis. L.A. went 9-9 in Ellis' absence, using Butera as the primary catcher.
"A.J.'s another one of the leaders on our club," Dodgers manager Don Mattingly said. "Drew and Fed did a nice job for us, but this gives us one of our frontline guys back in the lineup every day."
Meanwhile, pitcher Chad Billingsley, who has been rehabbing his way back from April 2013 Tommy John surgery, could be facing another surgical procedure. A contrast MRI to Billingsley's right elbow showed a partially torn flexor tendon. Billingsley has not yet decided whether to undergo surgery, which could put him out for the remainder of the season.
"Obviously, that's not going in the right direction," Mattingly said.