A passionate and committed educator in both music theory and violin practice, Li-Mei is a full-time music theory faculty member at the New England Conservatory, as well as a violin instructor at its Preparatory School. She also teaches violin as an affiliated artist at the Massachusetts Institute of Technology. In previous years, Li-Mei has served as a Lecturer in Violin and Chamber Music at the University of California, Irvine, a chamber music teacher for the Quad Chamber Music Program at Harvard University, as well as a private violin instructor at Arlington Public Schools. Li-Mei has also been invited as a guest violin and chamber music teacher at reputable institutions and summer festivals, including the Los Angeles County High School for the Arts, University of Texas Austin, Greenwood Music Camp, and Heifetz International Music Institute.

Li-Mei regularly plays with the East Coast Chamber Orchestra (ECCO), and has performed with the Saint Paul Chamber Orchestra (SPCO). She is also a core member of New York Classical Players (NYCP).