Dr. Johnson grew up in Alma, Nebraska, graduating first from Doane College and then from the University of Nebraska Medical Center. He completed his Internal Medicine Residency at UNMC, and a fellowship in Pulmonary and Critical Care Medicine at the University of Iowa Hospitals and Clinics in Iowa City, Iowa. He is Board Certified in Internal Medicine, Pulmonary Diseases, Critical Care Medicine, and Sleep Medicine.
Among his many professional honors, he has received the Young Alumnus Award from Doane College, and the Family Practice Residency Volunteer Teacher Award from the Lincoln Medical Education Foundation. He is a member of the American College of Physicians, American Medical Association, American Thoracic Society, American College of Chest Physicians, Society of Critical Care Medicine, American Academy of Sleep Medicine, Nebraska Medical Association, and the Lancaster Medical Society.
At the present time he serves as medical director of the Sleep Laboratory at Bryan Medical Center, Pulmonary Hypertension Clinic at Bryan Medical Center, and the ICU and Intensivist program at Bryan Medical Center East.