Purpose: Bacteremia is considered as a major cause of hospital acquired infections. The longer hospital stays and instrumentation on patients has led to increase in incidence of bacteremia. The common source being the normal commensal of the skin, anterior nares and the ear canals of the patients. The common commensal being Coagulase negative staphylococci have not been considered as pathogen for true bacteremia, but because use of intravascular devices and prolonged hospital stay has led these bacteria as a major causative agent. The aim of this study is to know the CoNS species distribution, its biofilm activity and to understand the various pathogenicity attributes causing bacteremia.