Dr. Mark Johnson received his medical degree at the George Washington University. He then completed his internship and residency in Internal Medicine at the University of Southern California, School of Medicine. He continued his medical training and completed his Gastroenterology fellowship at the VA Long Beach Healthcare System.
Dr. Johnson has over 35 years of medical experience. He is certified by the American Board of Internal Medicine and the American Board of Gastroenterology. Dr. Johnson is currently welcoming new patients.