Division of Infectious Diseases, Harbor-UCLA Medical Center 
Leading Patient Care, Training & Research

Excellence Mission:

  • Quality Patient Care
  • Training & Education
  • Leading Research
  • Community Service


Arnold Bayer, MD, FACP, FCCP, FIDSA

Dr. Bayer is Distinguished Professor of Medicine, David Geffen School of Medicine at UCLA and a Faculty member in the Division of Infectious Diseases, Harbor-UCLA Medical Center.  In a Faculty career spanning more than 30 years, Dr. Bayer has focused on deepening the understanding of infectious diseases.  He earned his medical degree from Temple University School of Medicine and did his Internship and Residency at Thomas Jefferson University Hospital, both in Philadelphia, PA. He did his Fellowship in infectious diseases at Harbor-UCLA and post-doctoral research training at the West LAVAMC.  Funded through NIH/NIAID and pharmaceutical sources, Dr. Bayer focuses on the expression of key virulence factors and genes, which enhance the ability of Staphylococcus aureus (e.g. MRSA) to cause infection and resist antibiotics, including host defense peptides.  In addition to his responsibilities in the Harbor-UCLA Medical Center community, Dr. Bayer serves an active role in the international medical and academic spheres. A co-author of over 300 scientific papers, book chapters and reviews, he frequently lectures on topics in infectious diseases.  Dr. Bayer has served on the NIAID National Association for Research in Staphylococcus aureus (NARSA), is a charter committee member of the International Consortium for the Study of Infective Endocarditis (ICE), and Councilor in the International Society for Cardiovascular Infectious Diseases (ISCVID).



 Harbor-UCLA Medical Center is an active and integral training campus of the broader    David Geffen School of Medicine at UCLA

Join us as we meet the challenges of infectious diseases in the 21st century