University of Arizona College of Medicine-Tucson Gastroenterology

Fellowship · Tucson, AZ

Sponsored by University of Arizona College of Medicine-Tucson · Director Joshua Melson

Joshua Melson, MD, MPH
Program Director, Gastroenterology Fellowship
Gastroenterologist, Clinical Professor of Medicine at University of Arizona College of Medicine-Tucson
Cancer prevention, hereditary and familial colon cancers, Barrett’s esophagus screening, surveillance and ablation.
Avin Aggarwal, MBBS, MD
Associate Program Director, GI Fellowship Program
Gastroenterologist, Associate Clinical Professor at University of Arizona College of Medicine-Tucson
Sasha Taleban, MD
Associate Program Director, Gastroenterology & Hepatology Fellowship · Papers with 2 fellows since 2023
Gastroenterologist, Associate Professor at University of Arizona College of Medicine-Tucson
Aging response in inflammatory bowel disease, Crohn’s disease, ulcerative colitis
Juanita Merchant, MD, PhD
Chief, Division of Gastroenterology & Hepatology · Papers with 2 fellows since 2023
Gastroenterologist, Regents Professor at University of Arizona College of Medicine-Tucson
Anas Bitar, MD
Clinical Associate Professor, Pediatrics – Clinical Series Track
Gastroenterologist, Clinical Associate Professor at University of Arizona College of Medicine-Tucson
Eosinophilic Esophagitis, Polyposis Syndromes
Bhupesh Pokhrel, MBBS, MD
Assistant Clinical Professor, Medicine
Gastroenterologist, Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Bianca Arellano, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Brandon Witten, MD
Associate Clinical Instructor, Medicine
Internist, Associate Clinical Instructor at University of Arizona College of Medicine-Tucson
Caitlin Gluck, DO
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Diane Rodden, MD, MS
Clinical Assistant Professor, Medicine
Gastroenterologist, Clinical Assistant Professor at University of Arizona College of Medicine-Tucson
Edmund Krasinski, DO
Associate - Assistant Clinical Professor, Medicine - (Clinical Series Track)
Gastroenterologist, Associate - Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Eric Smith, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Fayez Ghishan, MD
Professor, Gastroenterology, Hepatology and Nutrition
Gastroenterologist, Professor at University of Arizona College of Medicine-Tucson
Gebran Abboud, MD
Clinical Assistant Professor
Gastroenterologist, Clinical Assistant Professor at University of Arizona College of Medicine-Tucson
Geoffrey Block, MD, MSc
Clinical Professor of Medicine; Medical Director, Liver Transplant; Interim Director, Thomas D. Boyer Liver Institute
Gastroenterologist, Clinical Professor of Medicine at University of Arizona College of Medicine-Tucson
Gloria Schneider
Health Care Partner
Nurse practitioner in gastroenterology at University of Arizona College of Medicine-Tucson
Ibrahim Yaghnam, MD
Assistant Clinical Professor, Medicine - (Clinical Series Track)
Gastroenterologist, Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Jordon Walker, MD
Gastroenterology Fellowship
Internal Medicine resident, University of Arizona College of Medicine - Phoenix
Jose Garcia-Corella, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Joseph Gunderson, MD
Gastroenterology Fellowship
Internal Medicine resident, University of Texas Southwestern Medical Center
Karen Rico, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Kelli Yost, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Kyle Schneider, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Matthew Reif, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson

Joshua Melson, MD, MPH
Program Director, Gastroenterology Fellowship
Gastroenterologist, Clinical Professor of Medicine at University of Arizona College of Medicine-Tucson
Cancer prevention, hereditary and familial colon cancers, Barrett’s esophagus screening, surveillance and ablation.
Avin Aggarwal, MBBS, MD
Associate Program Director, GI Fellowship Program
Gastroenterologist, Associate Clinical Professor at University of Arizona College of Medicine-Tucson
Sasha Taleban, MD
Associate Program Director, Gastroenterology & Hepatology Fellowship · Papers with 2 fellows since 2023
Gastroenterologist, Associate Professor at University of Arizona College of Medicine-Tucson
Aging response in inflammatory bowel disease, Crohn’s disease, ulcerative colitis
Juanita Merchant, MD, PhD
Chief, Division of Gastroenterology & Hepatology · Papers with 2 fellows since 2023
Gastroenterologist, Regents Professor at University of Arizona College of Medicine-Tucson
Anas Bitar, MD
Clinical Associate Professor, Pediatrics – Clinical Series Track
Gastroenterologist, Clinical Associate Professor at University of Arizona College of Medicine-Tucson
Eosinophilic Esophagitis, Polyposis Syndromes
Bhupesh Pokhrel, MBBS, MD
Assistant Clinical Professor, Medicine
Gastroenterologist, Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Bianca Arellano, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Brandon Witten, MD
Associate Clinical Instructor, Medicine
Internist, Associate Clinical Instructor at University of Arizona College of Medicine-Tucson
Caitlin Gluck, DO
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Diane Rodden, MD, MS
Clinical Assistant Professor, Medicine
Gastroenterologist, Clinical Assistant Professor at University of Arizona College of Medicine-Tucson
Edmund Krasinski, DO
Associate - Assistant Clinical Professor, Medicine - (Clinical Series Track)
Gastroenterologist, Associate - Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Eric Smith, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Fayez Ghishan, MD
Professor, Gastroenterology, Hepatology and Nutrition
Gastroenterologist, Professor at University of Arizona College of Medicine-Tucson
Gebran Abboud, MD
Clinical Assistant Professor
Gastroenterologist, Clinical Assistant Professor at University of Arizona College of Medicine-Tucson
Geoffrey Block, MD, MSc
Clinical Professor of Medicine; Medical Director, Liver Transplant; Interim Director, Thomas D. Boyer Liver Institute
Gastroenterologist, Clinical Professor of Medicine at University of Arizona College of Medicine-Tucson
Gloria Schneider
Health Care Partner
Nurse practitioner in gastroenterology at University of Arizona College of Medicine-Tucson
Ibrahim Yaghnam, MD
Assistant Clinical Professor, Medicine - (Clinical Series Track)
Gastroenterologist, Assistant Clinical Professor at University of Arizona College of Medicine-Tucson
Jordon Walker, MD
Gastroenterology Fellowship
Internal Medicine resident, University of Arizona College of Medicine - Phoenix
Jose Garcia-Corella, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Joseph Gunderson, MD
Gastroenterology Fellowship
Internal Medicine resident, University of Texas Southwestern Medical Center
Karen Rico, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Kelli Yost, MD
Gastroenterology Fellowship
Gastroenterology fellow, University of Arizona College of Medicine - Phoenix
Kyle Schneider, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson
Matthew Reif, MD
Associate Clinical Instructor, Medicine
Gastroenterology fellow, University of Arizona College of Medicine-Tucson