Gastroenterology Atlanta offers services in gastroenterology. Services include colonoscopy, endoscopic ultrasound, capsule endoscopy and Endoscopic Retrograde Cholongiopancreatography (ERCP). It diagnoses and treats colonorectal cancer, tumors, gastroenteritis and IBD. It is helmed by Dr. Harold Asher. Asher is a graduate of the Emory University School of Medicine.