Marisa C. Nielsen, MS, PhD

Marisa C. Nielsen, MS, PhD, is Medical Director of Clinical Microbiology at Boston Medical Center and Assistant Professor of Pathology and Laboratory Medicine at the Boston University Chobanian & Avedisian School of Medicine.

Dr. Nielsen earned an MS in Environmental Microbiology at the University of Arizona and spent nearly a decade working in clinical microbiology before pursuing a PhD at University of California, Irvine. Afterwards, she completed a clinical microbiology fellowship at the University of Texas Medical Branch.

Dr. Nielsen is a certified Specialist in Microbiology by the American Society for Clinical Pathology and a board-accredited Diplomate of the American Board of Medical Microbiology (ABMM). Her interests include infectious disease diagnostics and microscopy, with a specific focus on high-consequence pathogens, particularly those acquired from environmental exposures.