The cast of Grey's Anatomy may need some-real life doctors on the set.

According to sources, stars Isaiah Washington (pictured) and Patrick Dempsey recently were involved in a violent brawl. With each other.

The ever-reliable National Enquirer first broke the story, but other sources have confirmed it. They report that a long-simmering feud boiled over on Monday when Washington and Dempsey started arguing over cast members being late for a scene.

It's no Paris Hilton and Lindsay Lohan, but here's the play-by-play:

"What are we waiting on?" said Isaiah.

"Not me," said Patrick. "I'm always ready."

"At that point," said the source, "Isaiah said something mean to T.R. Knight" (who plays mild-mannered Dr. George O'Malley).

"That's when Patrick told Isaiah, 'Pick on somebody your own size.' Well, that did it. Isaiah became enraged and grabbed Patrick by the throat and shoved him back a few feet."

Jeepers. Rumors have been swirling that Washington, an experienced stage actor, hasn't been pleased with the attention Dempsey has received as the face of the hit ABC show.

But there are better ways to handle things, Isaiah. Take a lesson from Jessica Biel and stretch out that anger. Take a deep breath.

And then follow the always inspirational lead of Nicole Richie and make up with your friend/co-star.