Anthony J. DiMarino, Jr., MD
Director, Digestive Disease Institute
Chief, Division of Gastroenterology and Hepatology
William Rorer Professor of Medicine

Sheeja K. Abraham, MD
Clinical Assistant Professor of Pediatrics

Jeffrey A. Abrams, MD
Clinical Assistant Professor of Medicine

Monjur Ahmed, MD
Clinical Associate Professor of Medicine

Curtis A. Alloy, DO
Clinical Associate Professor of Medicine

Louis T. Broad, MD
Clinical Associate Professor of Medicine

Cuckoo Choudhary, MD
Clinical Assistant Professor of Medicine

Robert M. Coben, MD
Associate Professor of Medicine
Academic Coordinator, Gastrointestinal Fellowship Program

Sidney Cohen, MD
Professor of Medicine
Director, Research Programs

Mitchell I. Conn, MD
Clinical Associate Professor of Medicine
Medical Director GI/Transplant Service Line

Joan DiPalma, MD
Assistant Professor of Pediatrics

Michael DiMarino, MD
Clinical Assistant Professor of Medicine

Jonathan Fenkel, MD
Assistant Professor of Medicine

Linda E. Greenbaum, MD
Associate Professor of Medicine
Associate Professor of Cancer Biology

Steven M. Greenfield, MD
Clinical Assistant Professor of Medicine

Hie-Won L. Hann, MD
Professor of Medicine
Director, Liver Disease Prevention Center

Steven K. Herrine, MD
Professor of Medicine
Associate Medical Director of Liver Transplantation
Assistant Dean, Academic Affairs

Anthony Infantolino, MD
Clinical Associate Professor of Medicine
Director, Endoscopic Ultrasound
Co-Director, Jefferson GI Bleeding Center

David M. Kastenberg, MD
Associate Professor of Medicine
Co-Director, Nutrition and Metabolic Diseases
Co-Director, Celiac Disease Center

Leo C. Katz, MD
Clinical Assistant Professor of Medicine
Medical Director, Metabolic and Nutritional Support Service

Thomas E. Kowalski, MD
Associate Professor of Medicine
Director of Gastrointestinal Endoscopy

Patricia Kozuch, M.D.
Assistant Professor of Medicine

Howard S. Kroop, MD
Clinical Associate Professor of Medicine

David E. Loren, MD
Assistant Professor of Medicine
Director, Endoscopic Research

Aarati Malliah, MD
Clinical Assistant Professor of Medicine

Victor J. Navarro, MD
Professor of Medicine, Pharmacology, and 
Experimental Therapeutics
Medical Director, Liver Transplantation

Nicholas Orfanidis, MD
Clinical Assistant Professor of Medicine

Jorge A. Prieto, MD
Clinical Assistant Professor of Medicine
Officer, Quality Assurance

Daniel Quirk, MD
Clinical Associate Professor of Medicine

Marianne T. Ritchie, MD
Clinical Assistant Professor of Medicine

Simona Rossi, MD
Clinical Assistant Professor of Medicine

Ivan Rudolph, MD
TJUH Volunteer Faculty
Clinical Assistant Professor of Medicine

Sonali Sakaria, MD
Assistant Professor of Medicine

Ali A. Siddiqui, MD
Clinical Associate Professor of Medicine

Other Clinical Providers
Angela M. Grabau, CRNP
Robin Miller, CRNP
Alicia Schumacher, PA-C