Dr. Poitier is a board-certified infectious disease doctor who is employed at the Los Angeles County Department of Public Health, where she has worked for nearly 20 years as a Medical Director in the Community Health Division. In this role, she oversees communicable disease outbreak investigations and all TB exposure investigations and supervises other clinicians. She is involved in direct patient care of TB and STD patients. Prior to coming to the Department of Public Health, Dr. Poitier worked as an attending physician at the Olive View Medical Center in Sylmar, California, where she was an Associate Professor of Clinical Medicine at UCLA.