Dr. Comellas obtained his Medical Degree from Central University of Venezuela. He moved the USA in 1998 where he completed his Internal Medicine Residency in 2001 at Northwestern University. He continued in the same institution for his Pulmonary and Critical Care Fellowship. In 2006 he became Assistant Professor at Northwestern University in the Division of Pulmonary and Critical Care Medicine. In 2008, he moved to the University of Iowa as a faculty member in the Division of Pulmonary, Critical Care and Occupational Medicine. He continued with his research on acute lung injury and expanded to environmental effects on airway innate immunity. He also became in the site PI for COPDGene and Spiromics. In 2017 he was named Director of the ICTS Clinical Research Unit at the University of Iowa