Bryan Stow had been in critical condition since the March 31 attack after the season opener between the Giants and Dodgers.
The 42-year-old Santa Cruz paramedic was moved last month from Los Angeles to San Francisco General Hospital, which has a top trauma center, to be closer to home.
Doctors there said Wednesday that Stow is now breathing without a ventilator and has been able to intermittently follow some basic commands. They say he's also been weaned off two of five anti-seizure medications used to address brain swelling and that they're lowering the doses of his remaining medications.