General Gastroenterology
Chien-Huan Chen, MD, PhD
Professor of Medicine
Associate Director of Clinical Affairs
Director, General GI
Director, Patient Safety and Quality
Director, Small Bowel Endoscopy Program
- Phone: 314-747-2066
- Fax: 314-747-5871
Nicholas O. Davidson, MD, DSc
John E. and Adaline Simon Professor of Medicine and Developmental Biology
Chief, Division of Gastroenterology
Director, Digestive Disease Research Core Center
- Fax: 314-362-2505
Cassandra Fritz, MD, MPHS
Assistant Professor of Medicine
Director, GI Fellowship Training Program
- Phone: 314-454-8165
- Fax: 314-747-5871
Angela Gieseler, PA-C, MMS
Physician Assistant
- Phone: 314-747-2066, Press option 1
- Fax: 314-747-5871
C. Prakash Gyawali, MD, MRCP
Professor of Medicine
Director, Neurogastroenterology and Motility Program
- Phone: 314-747-2066
- Fax: For Patient Related Faxes Please Use 314-747-1277
Patient-related faxes 314-747-1277




