Nurse Lauren Halston is a nurse at Sacred Heart Hospital.
J.D. was so smitten with Lauren that he had her shifts switched so she would work his same shifts. Carla later told her this, and she was very upset because she was working when her son took his first step. ("My Big Mouth") After J.D. diagnosed a patient as having flesh-eating bacteria, he imagined all the staff being impressed with him and Lauren asking him to sign her breasts. ("My Lucky Day") Elliot became very jealous of her when she got a sense that Paul Flowers had slept with her in the past, although this hunch was based on nothing whatsoever. ("My Karma")