Addison Montgomery and Derek Shepherd together again!

Kate Walsh and Patrick Dempsey had a surprise “Grey’s Anatomy” reunion in a new commercial for Cigna, released this week.

Neil Patrick Harris of “Doogie Howser, M.D.” and Donald Faison of “Scrubs” also star in the ad, which encourages viewers to visit an actual doctor for an annual check-up.

Walsh and Dempsey, who played former spouses on “Grey’s Anatomy”, haven’t shared the screen since a 2012 episode of the hit ABC medical drama. Walsh’s character, Addison Montgomery, left “Grey’s” for “Private Practice” in 2007, while Dempsey’s character, Derek Shepherd, was killed off the show in 2015.

Hear what “Grey’s” showrunner Shonda Rhimes had to say about killing McDreamy in the video below.

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