Future Leaders Program Mentor Biographies

Ronda Souza, MD, AGAF

Gastroenterologist & Endoscopist
Barclay Professionals

Suraia Boaventura Barclay, MD, AGAF, is a gastroenterologist and fellow of AGA with more than 30 years of experience. Brazilian born, Dr. Barclay entered medical school at the Federal University of Bahia in 1977. She completed a fellowship in internal medicine, gastroenterology and endoscopy at Roberto Santos General Hospital in Salvador as well as therapeutic endoscopy fellowships at the University of Sao Paulo and University of Hamburg in Germany.

Following an academic pathway, she completed her master’s degree and doctorate with two theses on peptic ulcers, chronic pancreatitis and pancreatic cancer. Before starting her own private practice in Bermuda, Dr. Barclay worked in gastroenterology and gastrointestinal endoscopy at various medical establishments in Brazil. She also served as an associate professor at the University of Sao Paulo from 1997 to 2001.

She has written for a number of peer-reviewed journals and chapter books, and she has spoken at international meetings in South America, North America, Europe and Asia. She currently serves on the AGA’s International Subcommittee.

Ronda Souza, MD, AGAF
Distinguished Professor of Medicine University of California, San Diego

Kim E. Barrett, PhD, AGAF, a native of the United Kingdom, obtained her bachelor’s degree and doctorate from University College London. Following a postdoctoral fellowship at the NIH, she joined the faculty of the University of California at San Diego (UCSD) in 1985 in the Division of Gastroenterology, was promoted to a full professor in 1996 and advanced to her current rank of distinguished professor of medicine in 2015.

From 2006 to 2016, she served as the dean of the Graduate Division at UCSD. In this capacity, she oversaw the recruitment, academic advancement and climate for more than 5,000 masters and doctoral students.

With support from the NIH and private foundations, her research interests have centered on the normal and abnormal biology of the intestinal epithelium and their relevance to inflammatory bowel diseases and diarrheal diseases. Her scientific accomplishments have garnered a number of awards and other recognitions, including the AGA Intestinal Disorders Section Research Mentor Award, the Bowditch and Davenport Lectureships of the American Physiological Society (APS), receipt of the degree of doctor of medical science, honoris causa, from Queens University Belfast, and the Bayliss/Starling Lectureship of The Physiological Society of UK and Ireland. She served on the governing board of AGA as the basic science councilor from 2004 to 2005 and has been a member or chair of several AGA committees.

In 2012, she was chosen by the APS membership as its president-elect, assumed the presidency in April 2013, and served as past-president in 2014 to 2015. She has also been highly active in scholarly publishing and is the chair-elect of the AGA Publications Committee and editor-in-chief for the Journal of Physiology.
Ronda Souza, MD, AGAF
Robert S. Brown Jr., MD, MPH, AGAF
Gladys and Roland Harriman Professor of Medicine Vice Chair, Mentorship and Academic Development, Department of Medicine Clinical Chief, Division of Gastroenterology & Hepatology Weill Cornell Medicine

Robert S. Brown Jr., MD, MPH, is vice chair of transitions of care and clinical chief of the Division of Gastroenterology and Hepatology in the Department of Medicine Weill Cornell Medical College in New York. He is also a professor of clinical medicine at Columbia University College of Physicians & Surgeons. Dr. Brown is the director of the Center for Liver Disease and Transplantation at New York-Presbyterian Hospital.

Dr. Brown received his bachelor’s degree from Harvard College, his medical degree from New York University and his master of public health from the Graduate School of Public Health at the University of California in Berkeley. After he earned his medical degree, he fulfilled his internship in medicine at Beth Israel Hospital in Boston and his fellowship in gastroenterology and hepatology at the University of California at San Francisco.

  Dr. Brown is an internationally known expert in liver disease and liver transplantation. He has coauthored more than 150 peer-reviewed articles, most of which have been dedicated to viral hepatitis and liver transplantation, and has extensive research funding in those areas. He is an associate editor for Liver Transplantation and GI and Hepatology News and published a book titled “Common Liver Diseases and Transplantation: An Algorithmic Approach to Work-up and Management.” He was awarded the Young Investigator Award from the American Society of Transplant Physicians, the Senior Attending Teacher Award from Columbia University Medical Center and the American Liver Foundation New York Chapter’s Physician of the Year.

Ronda Souza, MD, AGAF
Michael Camilleri, MD, AGAF
Atherton & Winifred W. Bean Professor of Medicine, Pharmacology, and Physiology Mayo Clinic College of Medicine and Science

Michael Camilleri, MD, AGAF, is a consultant in the Division of Gastroenterology and Hepatology in the Department of Internal Medicine at Mayo Clinic in Rochester, Minnesota. He was recognized with the Atherton and Winifred W. Bean Professorship in 2001 and as a Mayo Distinguished Investigator in 2008. He formerly held the position of dean of development at the Mayo Clinic. He holds the ranks of professor of medicine, pharmacology and physiology at the Mayo Clinic College of Medicine. He joined the staff of the Mayo Clinic in 1990.

Dr. Camilleri received his medical degree from the University of Malta Medical School and completed his residency at St. Luke’s University Hospital in Malta. He pursued fellowships in research and internal medicine and gastroenterology at Hammersmith Hospital at the University of London. He completed fellowships at the Mayo Graduate School in both research and clinical studies in gastroenterology.

Dr. Camilleri’s research interests include clinical enteric neurosciences, gut neurohormonal control, obesity, irritable bowel syndrome, and pharmacology and pharmacogenomics. He currently is principal investigator on two R01 grants from the NIH. Formerly, he was editor of Clinical Gastroenterology and Hepatology and of Neurogastroenterology and Motility and was an associate editor of Gastroenterology. He is currently an associate editor of American Journal of Physiology. He has published extensively in high-impact scientific journals such as the New England Journal of Medicine, Gastroenterology, American Journal of Physiology, Neurogastroenterology and Motility, Gut, and the American Journal of Gastroenterology.

Throughout his training and career, Dr. Camilleri has received numerous awards and honors, including the 2012 Ismar Boas Medal from the German Society of Digestive and Metabolic Disease, the 2012 AGA Distinguished Mentor Award, the Janssen Research Award, the Joseph B. Kirsner Award from AGA, and received honorary doctorates from the University of Antwerp (Belgium) and University of Malta. He is listed in “Best Doctors in America” for GI and GI motility.

Dr. Camilleri also participates in educational and mentorship activities at the Mayo Clinic and has mentored many national and international postdoctoral fellows and scientists. He was a recipient of an NIH K24 mentorship award for 10 years. He is a faculty member in the Clinical Research Training Program and has full faculty privileges in clinical and translational science at the Mayo Graduate School. Dr. Camilleri maintains an active clinical practice in gastroenterology at Mayo Clinic, specializing in gastrointestinal motility disorders, gastroparesis and functional gastrointestinal disorders.

Dr. Camilleri is the past-president of the AGA Institute (2015-2016) and past-chair of AGA (2016-2017). He has served as chair of the FDA’s Gastrointestinal Drugs Advisory Committee and as a member of study sections of NIDDK at the NIH.  
Ronda Souza, MD, AGAF
Sushovan Guha, MD, PhD, AGAF
Chief of the Division of Gastroenterology and Hepatology Banner University Medical Center in Phoenix Professor of Medicine University of Arizona College of Medicine

Sushovan Guha, MD, PhD, AGAF, obtained his medical degree from JIPMER Medical School at the University of Madras in India and subsequently graduated with masters’ degrees in microbiology and immunology from Columbia University. He completed his internship and residency in internal medicine at Albert Einstein College of Medicine in Bronx, New York. Dr. Guha then joined the prestigious Specialty Training and Advanced Research (STAR) Fellowship program in gastroenterology and hepatology at the David Geffen School of Medicine at the University of California in Los Angeles, where he also received his doctorate from the Molecular Biology Institute under the astute tutelage of Professor Enrique Rozengurt. After completing his fellowship, Dr. Guha was recruited to the University of Texas (UT) MD Anderson Cancer Center in Houston as an Assistant Professor in the Department of Gastroenterology, Hepatology, and Nutrition where he earned the highly competitive Physician Scientist Program Award. Subsequently, Dr. Guha was recruited as an associate professor and director of research in the Division of Gastroenterology, Hepatology, and Nutrition at the UT McGovern Medical School in Houston by Dr. Michael Fallon, then chief of the Division of Gastroenterology, Hepatology, and Nutrition at UT Health (UTH). Later, Dr. Guha was appointed as the associate director of the Division of Gastroenterology, Hepatology, and Nutrition and as interim chief of the Section of Gastroenterology and Hepatology at the Lyndon B. Johnson General Hospital in Houston, an affiliate of UTH. Dr. Guha continued to work as a board certified gastroenterologist and physician-scientist at the UTH Memorial Hermann hospital in Texas Medical Center until he was recruited as a professor of medicine and chief of gastroenterology and hepatology at the University of Arizona College of Medicine in Phoenix and physician executive director of Banner Health Digestive Diseases Institute at Banner University Medical Center in Phoenix. As part of continued leadership training, Dr. Guha successfully completed a two-week certificate course on the leadership development for physicians in academic medical centers at the Harvard T.H. Chan School of Public Health.

Dr. Guha has received national and international recognition as a physician-scientist and clinical educator in the field of gastroenterology and hepatology. He has published more than 100 peer-reviewed manuscripts, including an article that has been cited more than 650 times, invited reviews, book chapters, and has edited two books. Dr. Guha also received several honors and awards, including the AGA Mentors Research Award, AGA Research Excellence in GI and Liver Award, MD Anderson Cancer Center Physician Scientist Program Award, the APA R.L. Hirshberg Award in Pancreatic Cancer Research, and the MD Anderson Cancer Center Cyrus Scholar Award.

Dr. Guha has been active in several national and international gastrointestinal societies, including memberships in the AGA Center for GI Innovation and Technology, AGA Research Awards Panel, AGA Council’s Section of GI Oncology and AGA Academy of Educators. He has been the chair of the Pancreatic Neoplasm: Biology, Diagnosis, and Treatment Session at Digestive Disease Week (DDW®) since 2010 and a committee member for reviewing DDW abstracts in the lower gastrointestinal section I for the American Society for Gastrointestinal Endoscopy.

Dr. Guha’s clinical practice focuses on the entire spectrum of general gastroenterology with special emphasis on management of gastrointestinal bleeding in patients on uninterrupted anticoagulants and antiplatelet agents, placement of percutaneous endoscopic gastrostomy and percutaneous endoscopic gastrostomy transgastric jejunostomy tubes for providing enteral nutritional access, and screening and surveillance of colorectal cancer. Dr. Guha’s research comprises of both clinical and laboratory-based investigations. He has significant expertise in clinical outcomes research, including meta-analysis and systematic reviews. His clinical research includes application of deep machine learning, convolutional neural network, and artificial intelligence in gastrointestinal medicine to analyze imaging in real-time and perform predictive analytics. In addition, his group has received substantial funding from Banner Health Network to develop a clinical outcomes and research analytics program at Banner University Medical Center at Phoenix.

Dr. Guha’s laboratory research consists of unraveling oncogenic K-Ras mediated novel signaling pathways in pancreatic cancer. Dr. Guha had received an NIH grant (R21) to further investigate role of a novel AKT regulator, BSD domain-containing signal transducer and AKT interactor, in K-Ras mediated signaling pathways in pancreatic cancer. Dr. Guha will focus on translational research in pancreatic cancer with a major emphasis on early detection of both solid and cystic pancreatic neoplasms in collaboration with Dr. Haiyong Han at TGen.
Ronda Souza, MD, AGAF
C. Prakash Gyawali, MD, MRCP, AGAF

Professor of Medicine
Director of Neurogastroenterology and Motility
Program Director
Gastroenterology Fellowship Training
Washington University at St. Louis
School of Medicine

C. Prakash Gyawali, MD, MRCP, AGAF, is currently a professor of medicine, director of neurogastroenterology and motility and program director of the Gastroenterology Fellowship Training at the Division of Gastroenterology for the Washington University School of Medicine in St. Louis, Missouri. Dr. Gyawali’s academic interests include gastrointestinal motility, gastroesophageal reflux disease, and functional bowel disorders. He is also prominently involved in education and mentoring of students, residents, fellows and peers at all levels. He directs gastrointestinal motility centers affiliated with Washington University and is involved in motility testing using high-resolution manometry, esophageal ambulatory esophageal pH and impedance monitoring, wireless pH monitoring and endoscopic functional lumen imaging probe. He is part of several working groups and consensus committees involving esophageal physiologic testing and has more than 150 original publications. He has an extensive academic practice in esophagology and functional bowel disorders and is actively involved in clinical research involving neurogastroenterology and motility.

Ronda Souza, MD, AGAF
John Y. Kao, MD, AGAF
Associate Professor of Medicine University of Michigan Department of Internal Medicine

John Y. Kao, MD, AGAF, received his bachelor’s degree in psychobiology from the University of California (UC) in Los Angeles in 1992 and his medical degree from the University of Southern California School of Medicine in 1996. He went on to complete his internal medicine residency at the UC Davis Medical Center and did a combined clinical/basic research gastrointestinal (GI) medicine fellowship at the University of Michigan. During his GI fellowship training, he studied the effect of tumor-derived transforming growth factor beta on a dendritic cell tumor vaccine. After joining the GI faculty at the University of Michigan in 2002, he was awarded the AGA/Foundation for Digestive Health and Nutrition Fellowship to Faculty Transition Award and the GlaxoSmithKline Institute for Digestive Health Basic Research Award, which allowed him to compete for a K08 Award from the NIDDK to study the role of dendritic cells in Helicobacter pylori infection. He transitioned from his K08 to R01, focusing on understanding the mechanism of GI immune homeostasis. His other research interests include the role of gut microbiota in diseases of the GI tract, and he has translated this knowledge into clinical practice by helping to start the Fecal Microbiota Transplantation Program at the University of Michigan. Dr. Kao is also passionate about resident and fellow research training and serves as the associate director of research for the GI Fellowship Training Program at the University of Michigan, where he oversees the research progress of 21 GI/hepatology fellows in the program. He serves on several editorial boards for several journals, including Gastroenterology. His clinical interests include management of H pylori infection, inflammatory bowel disease, eosinophilic esophagitis, and celiac disease, as well as fecal microbiota transplant for recurrent Clostridium difficile–associated colitis.
Ronda Souza, MD, AGAF
Miguel D. Regueiro, MD, AGAF
Chair of the Department of Gastroenterology, Hepatology, and Nutrition Pier C. and Renee A. Borra Family Endowed Chair in Gastroenterology and Hepatology Vice Chair of the Digestive Disease and Surgery Institute Professor of Medicine Lerner College of Medicine The Cleveland Clinic

Miguel D. Regueiro, MD, AGAF, earned his bachelor’s degree from the University of Pennsylvania, his medical degree at Drexel (Hahnemann) University and completed his internal medicine internship, residency, and clinical and research fellowship training in gastroenterology at Harvard Medical School’s Beth Israel Hospital.

Dr. Regueiro was a professor of medicine and clinical and translational science at the University of Pittsburgh School of Medicine from 2000 to 2018. There he served as the inflammatory bowel disease (IBD) clinical medical director, senior medical lead of Specialty Medical Homes, was a tenured professor and honored as the University of Pennsylvania Medical Center endowed chair for patient-centered care in IBDs.

Dr. Regueiro is chair of the Department of Gastroenterology, Hepatology, and Nutrition, and vice chair of the Digestive Disease and Surgery Institute at The Cleveland Clinic in Ohio. He serves as the medical co-chair of the Digestive Disease and Surgical Institute Research Governance committee and is a professor of medicine at the Lerner College of Medicine at The Cleveland Clinic. He also holds the Pier C. and Renee A. Borra Family endowed chair in gastroenterology and hepatology for the Digestive Disease and Surgery Institute.

Dr. Regueiro’s main clinical and research interest is IBD with a focus on the natural course of these diseases and postoperative prevention of Crohn’s disease. He has been involved in transformative medicine initiatives and developing new models of health care, including the first-of-its kind specialty medical home and neighborhood for IBD. Dr. Regueiro is investigating alternative models of care in population-based health that integrates patients, payers, providers, the pharmaceutical industry and other facets of health care delivery around these novel programs.
Ronda Souza, MD, AGAF
James M. Scheiman, MD, AGAF
David Stone Professor Chief, Division of Gastroenterology and Hepatology University of Virginia Health System

James M. Scheiman, MD, AGAF, is an emeritus professor of medicine at the University of Michigan, where he was director of endoscopic research and the Advanced Endoscopy Training Program until the fall of 2017. He is a fellow of AGA, American College of Physicians, American College of Gastroenterology and American Society of Gastrointestinal Endoscopy (ASGE). A native of Detroit, he attended the University of Michigan for undergraduate, medical and postgraduate training. He developed the first endoscopic ultrasound program in the state of Michigan. He has received mentoring awards from both the ASGE and AGA, and his trainees have leadership positions in academic and clinical practice all over the world. He has served as an associate editor for endoscopy research for the American Journal of Gastroenterology and Gastrointestinal Endoscopy.

His research has focused on the pathogenesis and management of nonsteroidal anti-inflammatory drug– and aspirin-associated ulcers as well as Helicobacter pylori infection and other acid-related conditions. He pioneered the use of proton pump inhibitor combination therapy to reduce the bleeding risk associated with these medications and authored multidisciplinary guidelines that improve the care of such patients globally.

Dr. Scheiman is the author of more than 275 scientific publications and book chapters. His trial on the impact of indomethacin for the prevention of post–endoscopic retrograde cholangiopancreatography pancreatitis in the New England Journal of Medicine revolutionized the approach to preventing this dreaded complication. He authored AGA technical review on pancreatic cysts that provided the basis for updated guidelines for this common clinical problem.