The 39-year-old actor posed with co-stars Donald Faison and John C McGinley for the picture, reported Huffington Post.
Braff added the caption: "Reunited and it feels so good."
'Scrubs' ran for nine seasons between 2001 and 2010.
Alexandra Krosney recently joined the MTV dark comedy pilot 'Self Promotion', which is directed by Braff.
Braff recently directed and starred in the Kickstarter-funded 'Wish I Was Here'.