Karen is a nurse at Grey Sloan Memorial Hospital.
History
Hospital Hacking
When the computers at Grey Sloan were hacked, the doctors were left unable to access patient medical records. Jo spent time running around the hospital, tracking down which nurse had tended to Frankie Baner, so they'd know what kind of stroke he was having so they could treat him properly. She asked James and learned that Karen had been on shift at that time, but Karen said she was tied up, so she asked Taylor to take care of Frankie. Jo found Taylor just as he was leaving the hospital and he told her that he hadn't given Frankie Vitamin K, meaning giving him heparin would probably kill him. ("Out of Nowhere")
Karin Taylor
When Karin Taylor complained of pain in the ER, Karen came to get April to tell her about it. ("Personal Jesus")
Career
She is a nurse at Grey Sloan Memorial Hospital.