Isobel “Izzie” Stevens
At the beginning of her internship, Izzie struggled with other’s assumptions of her as an incompetent doctor, due to the fact that she used to be a lingerie model.
Izzie was a reasonably good doctor but when she cut Denny Duquette’s LVAD wire, she was going to be suspended but instead quit. Alex Karev later convinced Bailey to talk to Izzie and make her come back which Bailey succeeded in doing. Bailey convinced the Chief to let her return but with a strict probation which doesn’t allow her to have contact with patients and an inferiority to her fellow interns. Izzie became dissatisfied with limited amount of medical work she could do and frequently tried to push the boundaries of her probation. She even donated most of her money from Denny Duquette’s cheque to a free clinic where she and Bailey often worked.
During an emergency involving a ferry accident, Izzie saved a man’s life by drilling burr holes into his skull with an ordinary drill in the field. This prompted an impressed chief to take her off probation and allow her to finish the rest of the procedure by drilling more burr holes but this time with a real high-speed surgical drill.
Addison Montgomery told Richard Webber that Izzie had the potential to be an extremely gifted OB/GYN, one of the best she had seen in years but she was worried because she seemed to get too close to her patients. After using a tactic of assigning Izzie to a patient that would inevitably die, Izzie left obstetrics.
Off probationOff probation.
In season 4, Izzie decided to try going into cardiothoracics, but was met by a determined Cristina, who was also trying to make a career in the same department. She eventually decided that she was not suited for the specialty and stopped pursuing it.
After Bailey realized she had too many things to look after, she handed over the keys of the clinic to Izzie, giving it to her.
When her interns (and the others) started to dislike being doctors since they were banned from surgery, Izzie set up a competition, won by Lexie. When she realised that Denny appearing was because she was sick, the set up a competition to diagnose patient X. When she discovered that she had cancer and other people started to learn, she finally admitted herself as a patient, she just designed Meredith and Derek’s wedding and was quizzed on medical trivia by Bailey.
She quickly got back on her feet and continued working as a surgeon, although some thought it was too soon and after concerns from Owen Hunt, Derek Shepherd and Alex, Izzie was fired during the merger with Mercy West, although the chief used the standard speech and claimed it was due to budget cutbacks. After this Izzie left a note in Alex’s cubby and left him.