Oubre Jr suffered a fractured rib when he was struck by a vehicle while walking near his home on Saturday.
Maxey also registered seven rebounds, five assists and three blocks at the Wells Fargo Center.
"This had nothing to do with me - this is all Kelly Oubre," said Maxey.
"We're praying for him. I just met him but I love him. I hope he gets well soon."
Joel Embiid scored 37 points and made 13 rebounds for the 76ers, who extended their winning run to eight games.
A police report on the incident involving 27-year-old Oubre Jr, who is in his first season with Philadelphia, said a vehicle travelling "at a high rate of speed" struck him in the chest with the driver's side mirror.
"It's a pretty traumatic incident, but he is home and resting fairly comfortably. He's doing OK," said 77ers head coach Nick Nurse before the Pacers game.
"We're going to have about a week go by before we re-evaluate where he's at."
Although Jokic registered 36 points, 21 rebounds and 11 assists, the Nuggets claimed their sixth consecutive win.