Procedures Preformed by Dr. William F. Johnson, MD

• Biliary Drainage
• Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
• Endoscopy (Esophagus, Stomach, Small Intestine)
• ERCP (Endoscopic Retrograde Cholangiopancreatography)
• Liver Biopsy
• Manometry