Professor Callier teaches courses in bioethics and health care law in a variety of programs at SMHS. She is also a Professorial Lecturer in Law at the George Washington University Law School and Special Volunteer at the Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health. Her research focuses on topics related to precision medicine research and health disparities, diversity and inclusion in genomic research, genomic incidental findings, the use of race in medicine, pharmacogenomics, and the use of personalized genomic testing as an educational tool.