Mark A. Johnson graduated from Clark Atlanta University with his B.S. in Biology in the Summer of 1998. During his course of study, Mark became involved in congestive heart failure research. He later became involved in clinical pharmacology research at Morehouse School of Medicine in the fall of 1998.
Mark began work as a clinical trial coordinator with Atlanta Research Company in 1998 where he coordinated many trials with Douglas G. Day, M.D. and other physicians. In June 2004 Mark became a permanent fixture in the Atlanta operations of Coastal Research Associates, LLC.