Dr. Davis started his professional life as an architect before re-tooling to become a physician scientist. He attended the Emory University School of Medicine and did his graduate work in the Laboratory of Dr. Lalita Ramakrishnan at the University of Washington, pioneering the use of the zebrafish embryo for the study of mycobacterial pathogenesis and granuloma formation. He completed his training in General Pediatrics at Emory before moving to the University of Wisconsin-Madison for a Fellowship in Pediatric Infectious Diseases. During fellowship he developed a model of cryptococcosis in the zebrafish, and discovered new potential for the model to provide insights into granulomas of many kinds. He divides his time between laboratory research and clinical practice in Pediatric Infectious Diseases.