Expertise is provided for patients with conditions which require endoscopic retrograde cholangiopancreatography (ERCP) or endoscopic ultrasound (EUS). If a patient being followed by another member of the Division is felt to need one of these procedures, the advanced therapeutic endoscopist will be contacted directly. Patients being referred specifically for ERCP should be referred to Drs. Abraham Mathew, Thomas McGarrity or Nake Pooran.  Patients needing EUS should be referred to Drs. Abraham Mathew or Thomas McGarrity.