Denorfia, 32, will make $2 million in 2013 and $2.25 million in 2014. Going into Wednesday's game at Dodger Stadium, he was hitting .290 with six home runs and 30 RBIs in 314 plate appearances. He's been a terror on left-handed pitching, producing a .333/.387/.490 slash line.
"'Deno' is a guy who comes to play every day, is a great team player, a productive and winning player," said Padres manager Bud Black. "He's got a great perspective on this game and is very comfortable with who he is."
Denorfia needs only three more hits to tie his career high from last season (85). Denorfia has mostly been utilized in a right-field platoon with Will Venable, though he's seen time -- and will continue to so -- in left field, spelling Carlos Quentin.
"I'm really excited, I feel like I've found a home here," Denorfia said. "This organization is first class all the way. I'm happy to call San Diego home for two more years."
And he's happy to remain in the role Black has used him in -- whether that be a platoon situation, a spot start in left field or a pinch-hitting appearance.
"It's not an extra-man role but not a starter ... it's somewhere in the middle," Denorfia said. "It's a nice niche that I've found."
Denorfia came to the Padres in December 2009 when he signed a Minor League deal. He made the team the following spring and has been here ever since.
Since March, general manager Josh Byrnes has given contract extensions to outfielder Cameron Maybin, pitcher Cory Luebke, catcher Nick Hundley, Quentin, closer Huston Street, outfielder Mark Kotsay and now Denorfia.