
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

David H. Alpers, MD
Emeritus William B. Kountz Professor of Medicine
Co-Director, Center for Human Nutrition
- Phone: 314-362-8943
- Fax: 314-362-8230
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Surachai Amornsawadwattana, MD
Assistant Professor of Medicine
- Phone: 314-747-2066
- Fax: 888-869-4437
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Ahmad Najdat Bazarbashi, MD
Assistant Professor of Medicine
Director, Third Space Endoscopy Program
Program Director, Advanced Endoscopy Fellowship
- Phone: 314-362-3685
- Fax: 314-747-1277
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Michael C Bennett, MD
Associate Professor of Medicine
- Phone: 314-747-2066, press option 1
- Fax: 314-747-5871

Christopher R Berghoff, PhD
Associate Professor of Medicine
- Phone: 314-747-2066, Press Option 1
- Fax: 314-362-7642

Elizabeth Blaney, MD
Associate Professor of Medicine
- Phone: 314-747-2066, Press option 1
- Fax: 314-747-5871

Sarah Borgsmiller, PA-C
Physician Assistant
- Phone: For new patients, please call: 314-747-2066, option 1 For established patients, please call: 314-362-3903
- Fax: 314-747-5871

Rebecca Carpenter, MSN, BSN, RN, ANP-BC
Adult Nurse Practitioner
- Phone: 314-747-2066
- Fax: 314-747-1277

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

Matthew Ciorba, MD
Professor of Medicine
Director, Inflammatory Bowel Diseases Center
Director, IBD Research
Director, DDRCC Organoid and Genome Editing Core
Associate Director, GI Fellowship Program and T32 Research
- Phone: 314-747-2066
- Fax: 314-747-5871

Jeffrey S. Crippin, MD
Professor of Medicine
Marilyn E. Bornefeld Chair in Gastrointestinal Research and Treatment
Associate Chairman for Clinical Programs
- Phone: 314-747-2066
- Fax: 314-454-5108

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
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Parakkal Deepak, MBBS, MS
Associate Professor of Medicine
Director of Clinical and Translational Research, Division of Gastroenterology
Co-Director, IBD Center
- Phone: 314-273-1947
- Fax: 314-747-5871

Brian K. Dieckgraefe, MD, PhD
Associate Professor of Medicine
Chief of Gastroenterology, St. Louis VA Medical Centers
- Phone: 314-289-6434
- Fax: 314-362-8959

Jaquelyn F. Fleckenstein, MD
Professor of Medicine
Director, Hepatology Program
Director, Advanced Hepatology Fellowship
- Phone: 314-747-2066
- Fax: 314-454-5108

Maté Gergely, MD
Assistant Professor of Medicine
Director, IBD Intestinal Ultrasound
- Phone: 314-362-1031
- Fax: 314-747-5871

Angela Gieseler, PA-C, MMS
Physician Assistant
- Phone: 314-747-2066, Press option 1
- Fax: 314-747-5871

Martin H. Gregory, MD, MSCI
Assistant Professor of Medicine
Assistant Director, Clinical Operations
- Phone: 314-747-2066
- Fax: 314-747-5871

Anas Gremida, MD
Assistant Professor of Medicine
Director, Adolescent to Adult Transition Clinic
- Phone: 314-747-2066
- Fax: 314-747-5871

C. Prakash Gyawali, MD, MRCP
Professor of Medicine
Director, GI Fellowship Training Program
Director, Neurogastroenterology and Motility Program
- Phone: 314-747-2066
- Fax: For Patient Related Faxes Please Use 314-747-1277. For Fellowship Related Faxes Please Use 314-362-3643
Patient-related faxes 314-747-1277
Fellowship-related faxes 314-362-3643

Deborah Hiatt-Jensen, MSN, APRN, FNP-C
Adult Nurse Practitioner
- Phone: 314-747-2066
- Fax: 888-869-4437

Kayci Huff, MD, PhD
Associate Professor of Medicine
Director, Patient Experience and Pharmaceuticals
- Phone: 314-747-2066
- Fax: 314-747-5871

Devika Kapuria, MD, MBBS
Assistant Professor of Medicine
- Phone: For new patients, please call: 314-747-2066, option 1 For established patients, please call: 314-362-3903
- Fax: 314-747-5871

Kevin Korenblat, MD
Professor of Medicine
Medical Director, Liver Transplantation
- Phone: 314-747-2066
- Fax: 314-454-5108