Anderson spent time on the Major League roster the last two seasons, hitting .175 with no homers and four RBIs in 40 at-bats.
The prospect has been knocking on the door for a couple of years and had a big Spring Training, hitting .343 with one homer and eight RBIs.
Anderson will fill the roster spot vacated by outfielder Jason Repko, who is going on the disabled list with a separation of his left shoulder, an injury sustained making a spectacular catch on Friday against the Yankees.
A first baseman by trade, Anderson started getting some reps in the outfield during Spring Training, and he's played there a bit for Pawtucket.
"We'll talk to him about it," said manager Bobby Valentine. "We'll get the reports. He's here in case I want to use him in the outfield, maybe as a pinch-hitter, left-handed bat."
In other health news, third baseman Kevin Youkilis has recovered nicely from a left quad contusion that knocked him out of Saturday's game against the Yankees. He would have started on Sunday had the game not been rained out.