The next one will be Johnson's 30th of the season, and it will take place on Wednesday against the Braves at Marlins Park.
Reaching 30 is a big number for the Marlins ace, because there were questions about his health in Spring Training.
In 2011, right shoulder inflammation limited Johnson to nine starts and 60 1/3 total innings.
Now, the right-hander is at 179 1/3 innings, and his goal is to reach 200.
"I'm getting all my starts in, and I'm trying to get to 200," Johnson said.
Johnson is going to have to average seven innings per start to reach the benchmark for the second time in his career. In 2009, he logged 209 innings in 33 starts.
"My goal this season was no numbers, but to make all my starts," Johnson said. "If I miss the last one, that's fine. I'm fine with that. It's no big deal, because there is no reason to be out there."
Initially, Johnson was lined up to pitch in the season finale on Oct. 3 against the Mets at Marlins Park. Now, Mark Buehrle is scheduled to pitch in that game.
Johnson's final start is expected to be on Oct. 1 against the Mets.