The Phillies' catcher, who returned from the disabled list on Sept. 7 after dealing with plantar fasciitis in his left foot, has not started consecutive games behind the plate since his return.
Ruiz did appear in the last three games, two of which were in pinch-hit roles.
"We want to get him in the there and see how he does with it," said manager Charlie Manuel, who added that he wasn't ready to put Ruiz back in every day but is eager to have his bat in the lineup on a regular basis again.
Ruiz has set career highs this season in home runs (14), RBIs (60), runs (50) and extra-base hits (180). He is seven hits shy of tying his career high of 116 set last season.