After graduating from Sweet Briar College in Sweet Briar, Virginia, Dr. Johnson attended Milton S. Hershey School of Medicine in Hershey, Pennsylvania, where she received a Masters of Science in pharmacology. She received her medical degree from Temple University School of Medicine in Philadelphia. She completed her internship and residency in internal medicine at Emory University Hospital in Atlanta, as well as a fellowship in digestive diseases.
Dr. Johnson's previous academic appointments include an associate professorship at Duke University School of Medicine and assistant professor of medicine at Emory University School of Medicine. She is certified by the National Board of Medical Examiners and has also received certification in advanced cardiac life support.
She is a member of the American Gastroenterological Association, the American Society of Gastrointestinal Endoscopy, the Atlanta Medical Association, the Georgia Gastroenterological and Endoscopic Society, the Crohn's and Colitis Foundation of America and the Atlanta Women's Medical Alliance.
Dr. Johnson joined Atlanta Gastroenterology Associates in 1997.