when do the interns become residents grey's anatomy
A Change Is Gonna Come (Grey's Anatomy) "A Change Is Gonna Come" is the fourth season premiere of the American television medical drama Grey's Anatomy, and the 62nd episode of the overall series. The premiere focused on the aftermath of the main characters' promotion to residency, following the conclusion of their internship. The episode was the first not to feature Isaiah Washington, portraying Preston Burke, due to his being fired from the series at the conclusion of the third season. The installment marked Chyler Leigh's promotion to series regular status, following her guest appearances in the last two episodes of the previous season. Also featured were one-time guest actors Mark Pellegrino, Stephania Childers, Sandra Thigpen, and Steven Porter.