Bryan Stow's family wrote on their blog that the surgery is scheduled for Thursday or Friday.
Stow's cousin, John, tells The Associated Press that doctors plan to slowly wean his cousin off medication so that he's no longer in a sedated coma.
He says doctors hope that reducing medication won't result in seizures. When doctors began to reduce medication last month, Bryan Stow began to suffer seizures.
The 42-year-old paramedic and father of two was beaten in a parking lot by two men in Dodgers gear after the March 31 season opener. He remains hospitalized in Los Angeles. No arrests have been made.