Grey's Anatomy is a primetime series in the United States.
The American Broadcasting Company ( ABC ) is an American English language commercial broadcast television network that is owned by the Disney -- ABC Television Group , a subsidiary of the Disney Media Networks division of The Walt Disney Company . Grey 's Anatomy is an American medical drama television series that premiered on American Broadcasting Company ( ABC ) as a mid-season replacement on March 27 , 2005 . It is the longest running scripted primetime show currently airing on ABC , and the second-longest scripted primetime ABC show ever .