GHN Fellowship
![Mohamed Abu hamad, MD](https://pediatricgi.wustl.edu/files/2024/07/abuhamad.jpg)
Mohamed Abu hamad, MD
Mohamed Abu Hamad completed his medical degree at Jordan University of Science and Technology and pursued residency training in Pediatrics at the University of Iowa. Abu Hamad is passionate about pediatric gastroenterology, drawn to its blend of clinical complexity, compassionate care, and potential for long-term impact on young patients’ lives. He has a particular interest in pediatric nutrition, recognizing its pivotal role in shaping children’s growth, development, and overall well-being. Outside of his medical practice, Abu Hamad finds joy in hiking and exploring trails, immersing himself in nature’s beauty. He also embraces his competitive spirit as an avid gamer, where he enjoys the challenges and entertainment offered by video games.
![Molly Barr , MD](https://pediatricgi.wustl.edu/files/2022/07/BarrMolly_1_5x7-280x386.jpg)
Molly Barr , MD
Molly Barr, MD, completed her pediatric residency training at Washington University School of Medicine. Prior to residency, she graduated with a MD from Indiana University School of Medicine and a BS in Public Health from Saint Louis University. Barr's empathy for the children struggling with various diagnosis from constipation to complicated IBD presentations, finding the root of these problems and providing expertise to solve them is what drives her to continue in this field. In her spare time, Barr enjoys listening to podcasts, trying new cuisine and exploring all of the local parks St. Louis has to offer with her family.
![William Bennett, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
William Bennett, MD
July 2007 - July 2011
Current position: Associate Professor of Pediatrics, Indiana University School of Medicine
![Shelley Choudhury, MD](https://pediatricgi.wustl.edu/files/2022/07/ChoudhuryShelley_1_5x7-280x386.jpg)
Shelley Choudhury, MD
After graduating from Rhodes College with her BS, magna cum laude, Shelley Choudhury, MD, went on to earn her MD from the University of Tennessee Health Science Center College of Medicine. One of Choudhury's favorite aspects of the field is how frequently it interacts with other disciplines she enjoys learning about — immunology, rheumatology and hematology. Lately, she has found herself drawn to specific GI pathologies with overlap in hematology and oncology. Choudhury's passions extend out of the hospital and range from amateur watercolor painting, to traveling, to frequenting estate sales to get more ideas for home renovation projects.
![Mallory Cohen, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Mallory Cohen, MD
July 2017 - June 2020
Current positions: Assistant Professor in Pediatrics, Loma Linda University Health Care, Department of Pediatrics, Loma Linda, CA
![Tess Coker, MD](https://pediatricgi.wustl.edu/files/2022/07/Coker-Tess-GI-280x386.png)
Tess Coker, MD
Tess Coker, MD, finished her undergraduate studies with dual degrees of BS in Biology and BA in Spanish from the University of Arkansas. After reaching these milestones, she continued her education with a MD from the University of Arkansas for Medical Sciences College of Medicine. From experiencing the Teaching and Tomorrow Program at NASPGHAN to learning about the complex interplay between gastrointestinal and other organ systems, as well as nutrition and obesity, Coker developed a fascination with the complexity and appreciation for the breadth of gastroenterology. During her spare time, Coker sets a goal for herself to read 50 books per year, restores/refinishes antique and vintage furniture and is a proud dog mom who takes her dog everywhere she can.
![Trevor Davis, MD](https://pediatricgi.wustl.edu/files/2021/11/Davis_Trevor-280x386.jpg)
Trevor Davis, MD
Class of 2024
Trevor Davis completed his residency at St. Louis Children’s Hospital in the fall of 2021. He then went on to complete his fellowship program at Washington University School of Medicine in the fall of 2024. He also obtained extra training for the Nationwide Children’s in Columbus, Ohio. He has now joined Washington University School of Medicine Department of Pediatric Division of Gastroenterology, Hepatology & Nutrition bringing will launch an advanced motility program. He has already embarked on several initiatives to increase our knowledge about how to best use motility technology.
![Brian DeBosch, MD, PhD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Brian DeBosch, MD, PhD
July 2010 - June 2014
Current position: Associate Professor of Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Sheela Deivanayagam, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Sheela Deivanayagam, MD
July 2004 - June 2007
Current position: Pediatric Gastroenterologist, Payton Manning Children’s Hospital, Indianapolis, IN
![Jenna Diaz, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Jenna Diaz, MD
Jenna Diaz, MD attended the University of Missouri in Columbia, MO for her undergraduate studies, earning a BS in Biology. She completed her medical training there as well. Her pediatric residency training was in Miami, FL at the Nicklaus Children’s Hospital. As a Gastroenterology Fellow at Washington University in St. Louis she is interested in nutrition, short bowel syndrome and inflammatory bowel disease. In her free time, she enjoys running, spending time with family and traveling.
![Laura Duckworth, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Laura Duckworth, MD
Class of 2023
Laura Duckworth, MD graduated with a BS in biomedical engineering from Vanderbilt University and an MD from St. Louis University. She then went on to complete her pediatric residency training at Washington University School of Medicine. As Laura stays at WUSM for her pediatric gastroenterology fellowship, she is interested in nutrition and inflammatory bowel disease. In her free time, she enjoys hiking and backpacking, walking her dog, cooking, and traveling.
![Eyad M. Hanna, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Eyad M. Hanna, MD
July 2004 - June 2007
Current Position: Clinical Associate Professor, University of Iowa Children’s Hospital
![Brendan Harris, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Brendan Harris, MD
July 2016 - July 2019
Current position: Pediatric Gastroenterologist, Mercy Clinic Kids, St. Louis, MO
![Christina Hickey, MD](https://pediatricgi.wustl.edu/files/2021/11/Christina-Hickey-280x386-1.jpeg)
Christina Hickey, MD
July 2012 - June 2015
Current position: Instructor in Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Meredith Hitch, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Meredith Hitch, MD
July 2008 - July 2011
Current position: Pediatric Gastroenterologist, Our Lady of the Lake Children’s Hospital, Baton Rouge, LA
![Lori Holtz, MD](https://pediatricgi.wustl.edu/files/2021/11/Lori-Holtz.jpg)
Lori Holtz, MD
July 2006 - June 2009
Current position: Associate Professor of Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Chaowapong (Chao) Jarasvaraparn, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Chaowapong (Chao) Jarasvaraparn, MD
July 2018 - June 2021
Current position: Pediatric Transplant Hepatology Fellow, Washington University School of Medicine/St. Louis Children’s Hospital
![Shannon Joerger, MD](https://pediatricgi.wustl.edu/files/2021/11/Shannon-Joerger.jpg)
Shannon Joerger, MD
July 2010 - June 2013
Current position: Assistant Professor of Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Rachel Kassel, MD, PhD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Rachel Kassel, MD, PhD
July 2013 - June 2016
Current position: Assistant Professor in Pediatrics, University of Alabama Birmingham
![Sakil Kulkarni, MD](https://pediatricgi.wustl.edu/files/2021/11/Sakil-Kulkarni.jpg)
Sakil Kulkarni, MD
July 2014 - June 2018
Current position: Assistant Professor of Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Raffi LevTzion, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Raffi LevTzion, MD
July 2009 - June 2012
Current position: Assistant Professor, Hebrew University of Jerusalem
![Kim Liss, MD](https://pediatricgi.wustl.edu/files/2021/11/Kim-Liss.jpg)
Kim Liss, MD
July 2014 - June 2017
Current position: Instructor in Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Jessica McGhee, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Jessica McGhee, MD
July 2011 - June 2014
Current position: Assistant Professor of Pediatrics, University of Oklahoma-Tulsa, OK
![Caroline Meyer, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Caroline Meyer, MD
July 2012 - June 2015
Current position: Assistant Professor in Pediatrics, University of Colorado School of Medicine, Children’s Hospital Colorado – Colorado Springs
![Jerome Molleston, MD, PhD](https://pediatricgi.wustl.edu/files/2021/11/MollestonJerome-280x386-1.jpg)
Jerome Molleston, MD, PhD
Class of 2024
Jerome Molleston completed his residency at St. Louis Children’s Hospital in 2020. He then went on to complete his fellowship program at Washington University School of Medicine in 2024.
He has now joined Washington University School of Medicine Department of Pediatric Division of Gastroenterology, Hepatology & Nutrition bringing his advanced procedure skills, and, of course, his exuberant and inquiring approach to the care we provide.
![Nadia Naz, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Nadia Naz, MD
July 2017 - September 2020
Current position: Pediatric Transplant Hepatology Fellow, Washington University School of Medicine/St. Louis Children’s Hospital
![Ryan Pitman, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Ryan Pitman, MD
July 2016 - July 2019
Current position: Assistant Professor of Pediatrics, Indiana University/Riley Children’s Hospital
![Nisreen Soufi, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Nisreen Soufi, MD
July 2011 - June 2014
Current position: Assistant Professor of Clinical Pediatrics, University of Southern California/Children’s Hospital, Los Angeles, CA
![Kimberly Sutton, MD](https://pediatricgi.wustl.edu/files/2021/11/Sutton-Kimberly_Peds_01_300-280x386.jpg)
Kimberly Sutton, MD
Kimberly Sutton, MD graduated from the University of Notre Dame, earning a BS in science business. She completed her medical training at the University of Illinois College of Medicine and her Pediatric Residency training at St. Louis Children’s Hospital. Currently, she is a fellow with the Pediatric Gastroenterology Fellowship Program at Washington University School of Medicine in St. Louis, Missouri. Her research interests include IBD and endoscopy. She enjoys cooking, traveling and spending time with her husband.
![Stefani Tica, MD](https://pediatricgi.wustl.edu/files/2021/11/Tica_Stefani-280x386.jpg)
Stefani Tica, MD
Class of 2024
Stefani Tica completed her residency at St. Louis Children’s Hospital in 2020. She then went on to complete his fellowship program at Washington University School of Medicine in 2024. She is now a faculty member at Riley Children’s Hospital in Indianapolis, Indiana.
![Ashlyn Turner, MD](https://pediatricgi.wustl.edu/files/2021/11/Ashlyn-Turner.jpg)
Ashlyn Turner, MD
July 15 - June 18
Current position: Assistant Professor of Pediatrics, Washington University School of Medicine/St. Louis Children’s Hospital
![Daniel Verbaro, MD, PhD](https://pediatricgi.wustl.edu/files/2023/06/Daniel-Verbaro-MD-PhD.jpg)
Daniel Verbaro, MD, PhD
After graduating from Drexel University with a BS in Biological Sciences and Master of Chemistry, summa cum laude, Verbaro went on to earn his MD and PhD from Washington University School of Medicine. Having over ten publications and numerous talks/posters to his name currently, Dan’s continued passion and interest in Pediatric Gastroenterology grows as he continues to focus on the interplay/crosstalk between the gut enteric nervous system and the gut immune system. In his spare time, Dan likes to collect and build Legos with his children, go snowboarding, and new restaurants from the many choices St. Louis has to offer.
![Bernadette Vitola, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Bernadette Vitola, MD
July 2006 - June 2009
Current position: Associate Professor, Medical College of Wisconsin/Children’s Hospital of Wisconsin, WI
![Alex Weymann, MD](https://pediatricgi.wustl.edu/files/2021/11/missing-profile.jpg)
Alex Weymann, MD
July 2005 - June 2008
Current position: Assistant Professor of Clinical Pediatrics, Ohio State University College of Medicine/Nationwide Children’s Hospital