Procedures Preformed by Dr. John M. Petersen, DO

• Biliary Drainage
• Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
• Endoscopy (Esophagus, Stomach, Small Intestine)
• ERCP (Endoscopic Retrograde Cholangiopancreatography)
• Fecal Impaction Removal
• Hemorrhoidectomy or Excision of Anal Tags
• Liver Biopsy
• Manometry