(written from a Production point of view)
Before being tapped to write the Star Trek preview comic Star Trek: Countdown for IDW Publishing with fellow Orci/Kurtzman employee Tim Jones, his comic resume was limited to work for DC Comics on their Titans and Superman/Batman comics and a story in their 2008 Halloween special. Johnson and Jones subsequently wrote Star Trek: Nero and the Star Trek - The Official Motion Picture Adaptation. Continuing this trend, Johnson wrote comic book tie-ins to Fringe and Transformers: Prime, as well as episodes of the latter.
Johnson is writing the Star Trek ongoing series for IDW, adapting episodes of Star Trek: The Original Series for the alternate reality, as well as consulting on the upcoming video game.  He will also write the Star Trek Into Darkness prequel comic Star Trek: Countdown to Darkness. 
- Mike Johnson on Twitter