Catherine Liu, MD is an infectious diseases physician and professor in the Vaccine and Infectious Diseases Division at Fred Hutchinson Cancer Center (FHCC) and in the Division of Allergy and Infectious Diseases at University of Washington. She serves as the Director of the Antimicrobial Stewardship and Outpatient Parenteral Antimicrobial Therapy (OPAT) Programs and Associate Director of Infection Prevention at FHCC. Her clinical and research interests focus on the implementation and evaluation of strategies to optimize antimicrobial use and infectious disease management in immunocompromised hosts with a focus on patients with cancer and hematopoietic cell transplant recipients.