Dr. Sau trained in Dermatology at Walter Reed Army Medical Center, Washington, D.C. from 1985 to 1988. She was appointed as Assistant Chief of Dermatology and Chief Dermatopathologist in the Dermatology Service at Walter Reed Army Medical center from 1988 to 1995. Dr. Sau became Chief of Dermatology Service and Director of the Dermatology Residency Training Program at Walter Reed Army Medical Center in 1995. Dr Sau has been is an Associate Professor of Dermatology since 1993 at the Uniformed Services University of the Health Sciences, Bethesda, Maryland.
Dr. Sau is Board-certified in Pathology, Dermatopathology and Dermatology. She has over 50 publications.She retired from the US Army in 1998 in the rank of Colonel and is currently in private practice. Dr. Sau serves as consultant dermatologist at the Walter Reed National Military Medical center, the Dermatology branch of the National Institutes of Health and Dermatology division of Georgetown University Hospital. She is currently assigned as teaching staff at Howard University Hospital as Professor of Dermatology Howard University and consultant dermatopathologist and teaching staff at Georgetown University Hospital.