A novel coagulase-negative strain (NTUH-S172 ) was isolated from human blood culture in Taiwan with preliminary identification of . 16S rRNA gene analysis and multilocus sequence analysis (MLSA) showed that NTUH-S172 was most closely related to . The average nucleotide identity and digital DNA-DNA hybridization values with the whole genome sequence were <95 % and<70 % when compared to the related species. Strain NTUH-S172 could be distinguished from by urease production and from by nitrate reduction. In addition, the matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) spectrum of NTHU-S172 was significantly different from that of , which could be used in clinical identification. In conclusion, it is proposed that this isolate represents a novel species, named sp. nov., with type strain NTUH-S172 (=BCRC 81315 =JCM 34726 ).