Dr. Johnson joined the Children’s Clinic in 1975 after completing his residency at LeBonheur Children’s Medical Center in Memphis, TN. He received his M.D. from the University of Tennessee College of Medicine.  Before his residency at LeBonheur, Dr. Johnson served in the U.S. Army Medical Corps.

Dr. Johnson has served as the Research Co-Director for the Children’s Clinic since 2004.

Dr. Johnson is married and has three children.