In 1998 she was appointed to the faculty at the Geisel School of Medicine, where she has since served as director of electives for radiology.[5][6] She has developed 11 online resources for education that are used across the United States, including the Case-based On-Line Radiology Education (CORE) and Radiology ExamWeb.[7][8][9] Alongside developing resources and her popular YouTube channel, Lewis is involved in the development of the national curriculum for radiology.[10][11] In 2006 she began to edit and write questions for the American Board of Radiology.[1]