"He will certainly be in the hospital for a considerable period of time, presumably weeks", Dr. Jack Sava, the director of trauma at MedStar Washington Hospital Center, told reporters. While he's still under sedation, Sava says Scalise has responded to family members. Scalise, the No. 3 House Republican, arrived at the hospital via helicopter in shock, with intense internal bleeding and "an imminent risk of death", Sava said.
Doctors expect Mr Scalise will eventually be able to walk and return to work at "full capacity".
President Donald Trump visited Scalise at the hospital Wednesday night and later said in a speech, "He's a great fighter and he's going to be OK, we hope". Scalise has been an avid participant in the game since arriving in Congress in 2008.
House Majority Whip Rep. Steve Scalise was the only congressman injured in the shooting.
Many members of the House and Senate from both major political parties have spoken warmly about Scalise's gregarious nature this week.
Scalise suffered the most serious wounds among several people hit by bullets Wednesday.
The GOP-hating gunman who opened fire on Republicans at a Virginia baseball field had a handwritten list of lawmakers on him when he pulled the trigger, according to reports on Friday.
Law enforcement officials identified the shooter as 66-year-old James Hodgkinson of Belleville, Illinois, who later died from injuries sustained during a shootout with police on the scene.
Hodgkinson posted content favorable to Democratic presidential candidate Bernie Sanders on his social media accounts and signed a Change.org petition for the removal of Trump and Vice President Mike Pence.
The round fragmented into hundreds of pieces and did "substantial damage" to bones, internal organs and blood vessels, Sava said. "We salute them, and we also salute members of Alexandria Police, Fire and Rescue", Trump said.
Because of Scalise, Trump said, "and the tremendous pain and suffering he's now enduring - and he's having a hard time, far worse than anybody thought - our country will perhaps become closer, more unified". Officer David Bailey recovered enough to throw the first pitch at Thursday's Congressional Baseball Game.
The contest is a summertime tradition in Washington dating to 1909 and is known as a time for friendly competition between Republicans and Democrats, even at times when fractious political debates are the norm on Capitol Hill.