Gordon had been an analyst for Fox since retiring from racing in 2015.
The Indianapolis 500 posted its best ratings in five years with viewership up over 50 percent from the 2020 race.
The city is hosting a top-level NASCAR race for the first time since 1984.
Johnson joins the NBC crew for his first in-person experience at the Indianapolis 500.
Gordon is expected to call this weekend's action at Martinsville Speedway.
Fans can call in and interact with their favorite NASCAR personalities.
External factors such as the massive crash that took out 40 percent of the racing field and rainy conditions led to a precipitous drop in television...
Stewart, who was inducted into the NASCAR Hall of Fame last January, made his first broadcast appearance inside the FOX Sports booth when he called last...
"NASCAR, the NHL, and the English Premier League will all see games shift to NBC and USA Network. The EPL will also see more games go...
"A periodic look at the best and worst in sports media from an industry veteran who is neither a cardboard cutout nor a virtual fan."