Dr. Catherine Simpson is an instructor of medicine at the Johns Hopkins University School of Medicine. Her area of clinical expertise is internal medicine. Dr. Simpson earned her M.D. from the Louisiana State University School of Medicine. She completed her residency at Johns Hopkins, where she also performed a fellowship in pulmonary and critical care medicine. B.S., Louisiana State University (Baton Rouge) (Louisiana) (2008) M.D., Louisiana State University School of Medicine in New Orleans - New Orleans (Louisiana) (2012)