Zachary Lonjers, MD

Specializes In
  • Lung Health (Pulmonology)
  • Critical Care


Sees Patients For

Pulmonary conditions including asthma, COPD, interstitial lung diseases, pulmonary infections, and cancer and cancer related treatment complications. Order and interpret chest radiography and lung tests and perform bronchoscopies if needed for my patients.

Hospital Affiliations

  • Barnes-Jewish Hospital
  • Barnes-Jewish West County Hospital



Board Certifications

  • Internal Medicine
  • Pulmonary Medicine

Academic Title(s)

Assistant Professor, Pulmonary and Critical Care Medicine

Publications & Research

View research profile »


Fellowship: Pulmonary and Critical Care Medicine

2023 Washington University, St. Louis, MO

Residency: Internal Medicine

2018 University of Chicago, Chicago, IL

Medical Degree

2015 Stritch School of Medicine - Loyola University Chicago, Maywood, IL

Bachelor's Degrees: Biochemistry and Biology

2011 Gonzaga University, Spokane, WA