VanVleet bled from a cut near his right eye and stayed on the floor for a few minutes as Raptors medical personnel attended to the star backup.
ESPN cameras also captured what appeared to be a tooth following the collision:
Kawhi Leonard replaced VanVleet in the lineup with 9:35 remaining in the game and the Raps up 82-71.
ESPN's Doris Burke reported on the broadcast midway through the fourth that VanVleet received seven stitches and passed concussion tests.
The Raptors confirmed the news and reported that VanVleet, who had eight points, six assists and four rebounds upon his exit, was available to return.
The third-year pro out of Wichita State averaged 14.3 points per game over his first three NBA Finals contests and has played excellent defense on Warriors point guard Stephen Curry. He's an invaluable member of the Raptors' rotation and has closed out multiple playoff games with the starting unit.
Game 5 of the NBA Finals will take place in Toronto on Monday at 9 p.m. ET.