Dr. John Obrien Joerns, MD

Dr. John Joerns is an internal medicine physician who specializes in critical care medicine and pulmonology. He earned his medical degree from McGovern Medical School at the University of Texas Health Science Center at Houston and completed his residency at Barnes-Jewish Hospital. With 14 years of experience in medicine, Dr. Joerns brings extensive expertise to his practice treating complex respiratory and critical care conditions.

Dr. Joerns practices at multiple Mayo Clinic locations in Rochester, Minnesota, including Saint Marys Campus, Methodist Campus, and the main clinic. His clinical focus centers on treating patients with interstitial lung disease, pulmonary fibrosis, and chronic lung disease. He performs comprehensive diagnostic testing including complete blood counts and basic metabolic panels to evaluate and monitor his patients' health.