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Carlos Mejia, MD

Assistant Professor of Medicine


Patients seen at

Infectious Diseases Clinic
620 South Taylor Ave., Suite 100
St. Louis, MO 63110

Office location

Northwest Tower
4990 Children's Place
St. Louis, MO 63110

Additional Titles

Medical Director, Outpatient Parental Antimicrobial Program


  • MD: Universidad de San Carlos Facultad de Ciencias Medicas, Guatemala (2008)
  • Residency Internal Medicine: Roosevelt Hospital, Guatemala City (2009)
  • Residency Internal Medicine: Residency – Hospital Universitario La Paz, Madrid, Spain (2015)
  • Fellowship Infectious Diseases: Washington University School of Medicine, St. Louis MO (2019)

Carlos Mejia-Chew is an Assistant Professor in the Division of Infectious Disease and the Medical Director of the Outpatient Parental Antimicrobial Therapy program.

Dr. Mejia specializes in general infectious disease, with a special focus on mycobacterial infections and global health. He’s currently developing a joint clinical with Pulmonology to care for patients with nontuberculous mycobacterial (NTM) infections. He attends on the general, bone and joint, and telemedicine ID consult services teaching fellows, residents, and students; and sees patients in the ID clinic, mainly patients with NTM infections. He also collaborates with Dr. O’Halloran and Dr. Samayoa, from Roosevelt Hospital Guatemala, on a large cohort of people living with HIV, looking at multimorbidity outcomes.

He is currently mentoring fellows, residents, and students in research as part of the Global Health Pathway, and those with interest in developing a better understanding the epidemiology and clinical outcomes in different hosts with NTM infections.

Related Links

  1. @cmejiachew
  2. WashU Profile

Selected Publications

  1. Effect of infectious disease consultation on mortality and treatment of patients with candida bloodstream infections: a retrospective, cohort study. Lancet Infect Dis. Dec 2019. DOI: 10.1016/S1473-3099(19)30405-0
  2. Preliminary, Real-world, Multicenter Experience with Omadacycline for Mycobacterium abscessus Infections. Open Forum Infect Dis. Jan 2021. DOI: 10.1093/ofid/ofab002
  3. Equal cryptococcus score 2018: A European confederation of medical mycology score derived from current guidelines to measure quality of clinical cryptococcosis management. Open Forum Infect Dis. Nov 2018. DOI: 10.1093/ofid/ofy299


Bibliography – Carlos Mejia-Chew

ORCid – Carlos Mejia-Chew