Popsugar Entertainment Grey's Anatomy Grey's Anatomy Season 15 Cast Here's How the Cast Is Shaking Out For Grey's Anatomy's 15th Season 24 July 2018 by Ryan Roschke View On One Page Photo 16 of 16 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 16 Dr. Marsh (Scott Speedman) This one's really just wishful thinking. Dear Grey's Anatomy, please bring this handsome doctor back! Previous Next Start Slideshow Grey's AnatomyTV