top of page

Dr. Dennis Kellar, owner, CEO, and physician of Northwest Pulmonary and Sleep Medicine, is a board-certified multispecialty physician. Some of his many areas of expertise include trauma/critical care, pulmonary diseases, sleep disorders, and complex long term respiratory and ventilator care. Dr. Kellar has been serving the community for over 20 years. He received his bachelor’s degree in biology from the University of South Florida and received his medical degree from Ross University School of Medicine. Dr. Kellar’s training includes internal medicine residency in Cook County Hospital, and completion of a fellowship in pulmonary, critical care, and sleep medicine as chief fellow at Rush University Medical Center in Chicago. Dr. Kellar has served as a clinical assistant professor of medicine at the University of Illinois Rockford. He is a veteran of the United States Army that served with the 101st airborne division. Dr. Kellar also holds numerous Director positions including Medical Director for several ventilator care and COVID units in the northwest suburbs. He serves as the previous Director for Respiratory Therapy for the State of Illinois and Director for Pulmonary Sleep services for a large health system in northern Illinois. Dr. Kellar has been published in numerous areas covering pulmonary and critical care, and was appointed as a special investigator of the Coroner’s office in Mchenry County.



Contact Info:

Northwest Pulmonary & Sleep

1340 Ryan Pkwy, Algonquin, IL 60102



Click here to visit website

Dr. Dennis Kellar - America's Top 50 Doctors - Pulmonologist - Illinois

    bottom of page