The Mets promoted Jesus Feliciano from Triple-A Buffalo to take Barajas' place on the roster.
Barajas, who turns 35 on Sept. 1, had a .263 on-base percentage and .414 slugging percentage in 267 plate appearances with New York this season.
"It's tough to leave," Barajas said. "But at the same time, I wasn't sure how much playing time was going to come my way, and if I could get in a situation where I can get behind the plate and play a little bit more, I was all for it."
The Dodgers, who lost starting catcher Russell Martin for the season Aug. 3 with injuries to his right hip, have been trying to get by with Brad Ausmus and A.J. Ellis behind the plate.
"It's a good spot for me," Barajas opined. "That's my team, that's who I grew up with and that was a childhood dream. To get that opportunity to put the uniform on is definitely going to be one of the high points of my career. I love L.A., I'm an L.A. guy. If I could pick a team, that would probably be it."
The emergence of young catcher Josh Thole for the Mets made Barajas expendable.
Mets manager Jerry Manuel was asked if Thole is ready to be a No. 1 catcher.
"We feel that way," he replied. "We feel that Josh has evolved and matured into becoming a guy that can handle the pitching staff, so we feel pretty good about that."
For his part, Thole is ready for the challenge.
"I'm ready," Thole stated. "I've been working with all the starters and the bullpen and developing good relationships with all the guys."