She has the American Board of Pathology certification in surgical and cytopathology. Her clinical expertise include surgical pathology, cytopathology, and oncological pathology. Dr. Li is also a PI at the Johns Hopkins Biomarker Discovery Center. Her research interests is focusing on the application of advanced molecular techniques to the field of cancer biology, particularly in the field of early detection of lung and prostate cancer. Dr. Li serves as editorial board members for several journals; committee members of the American Society of Cytopathology, Papanicolaou Society of Cytopathology, NIH/NCI lung cancer, and kidney cancer working group; study sections of government agents and private organizations. She has more than 120 publications, including several book chapters and books. She has served as a keynote speaker at many national and international meetings.