'Grey's Anatomy' Star: Marriage Flatlines ... Band in Jeopardy

Kevin McKidd -- who plays Dr. Owen Hunt on "Grey's Anatomy" -- is getting a real-life MD ... Marital Dissolution ... and the family band is probably a goner.

Kevin's wife, Jane McKidd, has filed for divorce just weeks before their 17th anniversary. It was apparent the marriage was coming to an end -- they separated back in October.

Jane is asking for joint custody of their teenage kids, and she wants spousal support.

As for the band ... it was very Partridge Family. Jane played bass, the kids played piano and drums ... it's unclear what Kevin did in the group.