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. The series focuses on the fictional lives of surgical interns, residents, and attendings as they gradually evolve into seasoned doctors, while trying to maintain personal lives and relationships. Although the show is set in Seattle at the fictional Grey-Sloan Memorial Hospital (Formerly Seattle Grace-Mercy West) it is primarily filmed in Los Angeles, California. Current Season : 12