(662) 327-7525

600 Leigh Drive | Columbus, MS 39705
2 Professional Plaza | Starkville, MS 39759

Dr. Johnston was born in Spartanburg, SC, grew up in Vicksburg, MS, and then attended Mississippi State University in Starkville, MS.  He earned his Medical Doctorate at the University of Mississippi School of Medicine in Jackson, MS, where he later completed his Internal Medicine residency and then served a year as Chief Resident.  After finishing his Gastroenterology fellowship in 2009 at the University of Miami-Jackson Memorial Hospital combined program in Miami, FL, he joined Drs. Rawson, Williams, and Johnson to support the need for the growing GI practice. He has quickly gained recognition in the community and from his peers for being an outstanding physician and leader. He has served as chairman of the Department of Medicine and is currently serving as chief of staff for BMH Golden Triangle. He is an active member of the American Society of Gastrointestinal Endoscopy, the American College of Gastroenterology, the American Gastroenterology Association, and the American College of Physicians.

Dr. Johnston and his wife, Brooke (also a physician) have 1 child and are active in the local community supporting the Columbus Arts Council, Boy Scouts of America, Palmer Home for Children and Stephen D. Lee Home and Museum as well as various other charitable organizations. In their spare time, they enjoy traveling, attending Mississippi State football, baseball and basketball games and also attending Florida State Seminoles football games (his wife's alma mater). He stays active playing ultimate frisbee and is an avid runner, routinely competing in races from 5Ks to full marathons. He has also competed in a few sprint distance triathlons.


Specialty: Gastroenterology
Primary Office Location: Columbus, Mississippi
Secondary Office Location: Starkville, Mississippi
Licensure: Mississippi


Chemical Engineering, B.S.
Mississippi State University, 1998
Starkville, MS

Medical School
University of Mississippi School of Medicine, 2002
Jackson, MS

University of Mississippi Medical Center, 2003
Jackson, MS

University of Mississippi Medical Center, 2005
Jackson, MS

Chief Resident
University of Mississippi Medical Center, 2006
Jackson, MS

University of Miami—Jackson Memorial Hospital, 2009
Miami, FL


Gastroenterology Associates of Columbus, P.A., 2009-present
600 Leigh Drive
Columbus, MS

Columbus Endoscopy Center, Inc., 2009-present
600 Leigh Drive
Columbus, MS


Baptist Memorial Hospital
Columbus, MS

OCH Regional Medical Center
Starkville, MS


Certified in Internal Medicine, American Board of Internal Medicine: 2005
Certified in Gastroenterology, American Board of Internal Medicine: 2009


American Society of Gastrointestinal Endoscopy
American College of Gastroenterology
American Gastroenterology Association
American College of Physicians

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600 Leigh Drive Columbus MS, 39705

2 Professional Plaza, Starkville, MS 39759