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Initial Certification indicates that physicians have met rigorous standards through intensive study, accredited training and evaluation and that they have the clinical judgment, skills and attitudes essential for the delivery of excellent patient care.

MOC is a professionally determined standard that attests that an internist is staying current in knowledge and practice throughout his/her career.

For more than 75 years, Certification by ABIM has stood for the highest standard in internal medicine and its 20 subspecialties.

Gastroenterology Board Exam Committee

William J. Tremaine, MD, Chair

Dr. Tremaine is a Consultant in Gastroenterology and the Maxine and Jack Zarrow Professor, Division of Gastroenterology, at the Mayo Clinic in Rochester, Minnesota. He is also currently the Medical Director of the Human Research Protection Program of the Mayo Clinic. He is board certified in Internal Medicine and Gastroenterology.

Dr. Tremaine's clinical and research interest is in inflammatory bowel disease. He was the first director of the Inflammatory Bowel Disease Clinic at the Mayo Clinic. He served as Chair of the Grants Review Committee of the Crohn's & Colitis Foundation of America from 2012 to 2015. He is a member of the American Board of Internal Medicine Gastroenterology Board Exam Committee and has been an Associate Editor of the Inflammatory Bowel Diseases journal for the past 21 years.

Dr. Tremaine received a bachelor's degree from Vanderbilt University and a medical degree from the University of Mississippi. He completed residency training in internal medicine and a fellowship in gastroenterology at the Mayo Clinic in Rochester, Minnesota.

Disclosure of External Relationships

Sheila E. Crowe, MD

Dr. Crowe, who is board certified in Gastroenterology, is the Division of Gastroenterology at the University of California, San Diego as Professor of Medicine, Director of Research and Director of the National Institutes of Health T32 Gastroenterology Research Training Program.

Dr. Crowe joined the faculty at McMaster University, Hamilton, Ontario, Canada in 1988 as a Research Scholar, spending three years of additional research training in the Intestinal Diseases Research Unit at McMaster University and the Hospital for Sick Children in Toronto. She was appointed as Assistant Professor in 1991 before moving to the University of Texas Medical Branch (UTMB) in Galveston in 1992. There she served as Director of the UTMB GI Fellowship and promoted to Associate Professor. She moved to the University of Virginia (UVA) in 2001 where she rose to Professor of Medicine and served as Director of Faculty Development for the Division, Director of the UVA Celiac Disease Center, Director of Endoscopy at the Outpatient Surgical Center at UVA and Director of the UVA Gastroenterology NIH T32 Training Grant.

Dr. Crowe, an active member of the American Gastroenterological Association (AGA), is currently the Association’s Vice President , and will be the AGA President-Elect starting May 2016, followed by President of the AGA in 2017, ending the 4-year term as AGA Past-President. She was the Councilor-at-Large on the Governing Board of the AGA 2010 to 2013 and in that role, she chaired the AGA Publication Committee and was the Editor of AGA Perspectives. She was a long-term elected member of the AGA Council then elected to serve as the AGA Council Chair in 2006 to 2009. Dr. Crowe was awarded the AGA 2008 Funderburg Award for her research relevant to gastric cancer and was named as a 2008 Outstanding AGA Woman in Science. She served as the Director of the AGA 2010 Spring Postgraduate Course, and was the recipient of the 2013 AGA Distinguished Educator Award.

Additionally, Dr. Crowe has served on the American Board of Internal Medicine Gastroenterology Board Exam Committee since 2010 and on the Executive Council of the North American Society for the Study of Celiac Disease since 2014. She is a fellow of the Royal College of Physicians of Canada, the American College of Physicians, the American College of Gastroenterology and the AGA.

Dr. Crowe received her undergraduate degree from the University of Toronto, Trinity College in 1979 and received her medical degree in 1982 from McMaster University, where she completed postgraduate training in internal medicine in 1986 and gastroenterology in 1988.

Disclosure of External Relationships

David A. Johnson, MD

Dr. Johnson, board certified in Internal Medicine and Gastroenterology, is Professor of Medicine and Chief of Gastroenterology at Eastern Virginia Medical School.

He currently serves on the American Board of Internal Medicine Gastroenterology Board Exam Committee. He has served as the Gastroenterology Technical Advisory Chair for the National Quality Forum (NQF) as well as on various NQF committees and GI-related task force activities from 2005 to 2011. He is a past President of the American College of Gastroenterology (ACG) and served the ACG previously as Governor (for the state of Virginia), Chair of ACG Quality Council Task Force, and member of the Educational Affairs, Publications, Constitution and Bylaws (Chair), Nominating (Chair) committees.

His primary research interests are esophageal reflux disease and colon cancer screening. He has special interest in endoscopic and pharmacologic therapies for GERD. He worked with Virginia State Senator Emily Couric to put through the historic first legislation to mandate colon cancer screening with colonoscopy as the preferred standard. This initiative, first in Virginia, has set the model for other states which have followed with similar legislation mandating CRC screening.

He has published extensively in the internal medicine/gastroenterology literature, contributing more than 500 articles/chapters/invited reviews and abstracts in peer-reviewed journals and books. Additionally, he co-edited the American College of Physicians book, “Dyspepsia.”

He was awarded master status from the American College of Gastroenterology (1983); acknowledged as a “Great Teacher” at the National Institutes of Health (2012); honored as “Master of Gastroenterology” and “Presidential Award” by the Virginia Gastroenterological Society; the Dean's EVMS Outstanding Community Faculty Award from Eastern Virginia Medical School (2012) and received the Berk/Fise Clinical Achievement Award for 2012 from the American College of Gastroenterology.

He received his medical degree from the Virginia Commonwealth University School of Medicine. He completed his internship in gastroenterology at the Naval Medical Center; residencies in internal medicine at the University of Virginia and the Naval Medical Center; and a fellowship in internal medicine at the National Capital Consortium.

Disclosure of External Relationships

David R. Lichtenstein, MD

Dr. Lichtenstein is the Director of Gastrointestinal Endoscopy at Boston Medical Center and Associate Professor of Medicine at Boston University School of Medicine. He is board certified in both Internal Medicine and Gastroenterology.

Dr. Lichtenstein is a recognized educator in endoscopic approaches for diagnosing and managing gastrointestinal hemorrhage, pancreaticobiliary tract disorders, and gastrointestinal malignancies. He supervises Gastroenterology Fellowship training in advanced endoscopic procedures and is responsible for evaluating and implementing new endoscopic technologies at Boston Medical Center.

Dr. Lichtenstein is member of the American Board of Internal Medicine Gastroenterology Board Exam Committee. He is an active member and current fellow of the American Society for Gastrointestinal Endoscopy (ASGE), American College of Gastroenterology and American Gastroenterological Association. He has been recognized in The Best Doctors in America, Boston Magazine’s “Best Doctors of Boston”, as well as Castle Connolly’s Guide to America’s Top Doctors. He is the former Chair of the Endoscopic Retrograde Cholangiopancreatography Section of the Annual Scientific Program Committee for Digestive Disease Week, and Chair of the Assessment and Certification Task Force that introduced a series of Skills Training Assessment Reinforcement educational programs for the ASGE. He has also served on the ASGE Research, Standards of Practice, International, Web Education, Technology, and Gastrointestinal Endoscopy Self-Assessment Program Committees. In addition, he was the past President of the New England Endoscopy Society.

Dr. Lichtenstein received his medical degree from the University of Pennsylvania School of Medicine. He completed residency training in internal medicine at Duke University Medical Center and received fellowship training in gastroenterology at Beth Israel Hospital in Boston. He later served as Chief Medical Resident at Duke University Medical Center and subsequently received advanced interventional endoscopy training at Duke University Medical Center and Brigham and Women’s Hospital.

Disclosure of External Relationships

Ugochukwu C. Nzeako, MD, MPH

Dr. Nzeako is a board certified gastroenterologist and a Partner at Watson Clinic LLP, a large private multispecialty group in Lakeland, Florida. During his time at Watson Clinic, he has served two terms as Spokesperson (Head) of the Gastroenterology Department.

In addition to a full-time clinical gastroenterology practice, Dr. Nzeako serves as an Academic Editor for the online journal, Medicine, and as a reviewer for several other journals. He is the author of several scholarly articles in the fields of gastroenterology and hepatology, as well as gastrointestinal and hepatic pathology. Dr. Nzeako has also published articles on the diagnosis and management of gastrointestinal manifestations of hereditary angioedema from the gastroenterologists perspective. He serves as a member of the American Board of Internal Medicine Gastroenterology Board Exam Committee.

Dr. Nzeako received his medical degree from the University of Nigeria in 1987. His postgraduate medical training includes a Callendar-Binford Fellowship in Gastrointestinal and Liver Pathology at the Armed Forces Institute of Pathology in Washington, District of Columbia; an internal medicine residency at the University of Connecticut; and a gastroenterology fellowship at the Mayo Clinic in Rochester, Minnesota. He also holds a master’s degree in public heath from the University of Sydney, Australia. Dr. Nzeako is a member of the American College of Gastroenterology and the American Gastroenterological Association.

Disclosure of External Relationships

Charlene M. Prather, MD

Bio coming soon.

Disclosure of External Relationships

Nancy S. Reau, MD

Dr. Reau, board certified in Internal Medicine, Gastroenterology and Transplant Hepatology, is currently Associate Director of Solid Organ Transplantation and Section Chief of Hepatology at Rush University Medical Center.

She previously served as Assistant Professor of Medicine at Rush University in Chicago from 2002 to 2005. She became an Associate Professor of Medicine in 2010, Medical Director of Hepatology Clinical and Translational Research in 2015, and then joined Rush University Medical Center in 2015.

Dr. Reau's research interest is in viral hepatitis, both in drug development as well as utilization. She is currently a member of the American Association for the Study of Liver Diseases (AASLD) steering committee for the hepatitis C special interest group and a member of the AASLD/IDSA Practice Guidelines for hepatitis C and served as the chair of the AASLD public policy committee. She is a member of the American College of Gastroenterology (ACG) women's training committee. She has been a member of the national board of directors of the American Liver Foundation (ALF) and served as the president of the Illinois chapter. She is currently co-chair of the National ALF Medical Advisory Committee and serves on multiple advisory boards including Medscape and Medivo.

Dr. Reau received her undergraduate degree at Oberlin College in Oberlin Ohio and doctorate of medicine, cum laude, from The Ohio State University in Columbus, Ohio. She completed a medicine residency and a gastroenterology fellowship at The Ohio State University. She went to the Johns Hopkins Medical Center in Baltimore, Maryland, where she did her advanced transplant hepatology fellowship in 2001.

Disclosure of External Relationships

Christopher E. Shih, MD

Dr. Shih is currently a partner with Regional Gastroenterology Associates of Lancaster in Lancaster, Pennsylvania. He serves on several committees within his practice as well as on the Engagement Council Physician Subcommittee of Lancaster General Health/Penn Medicine, and is a graduate of the Lancaster General Health Physician Leadership Academy.

Previously, he was a partner with Capital Digestive Care in the Washington, District of Columbia area.

Dr. Shih frequently gives lectures and contributes scholarly articles to organizations within his community. He is actively involved in community and charitable services, sits on the boards of multiple local nonprofit groups. He is a member of the American Board of Internal Medicine Gastroenterology Board Exam Committee and a fellow of the American College of Gastroenterology. He is also an accomplished pianist with an international reputation and a busy concertizing schedule.

Dr. Shih received his bachelor’s degree in biochemistry cum laude from Harvard University and his medical degree from The Johns Hopkins University School of Medicine. He did his internal medicine residency training at the University of Pennsylvania and his gastroenterology fellowship training at Johns Hopkins. He is board certified in Gastroenterology.

Disclosure of External Relationships

Joseph C. Yarze, MD

Dr. Yarze is a board certified internist and gastroenterologist. Since 1994, he has been in private practice at the Gastroenterology Associates of Northern New York in Glens Falls, New York.

In 1991, Dr. Yarze worked as a gastroenterology staff consultant at The Guthrie Clinic in Sayre, Pennsylvania. While there, he received the Dean’s Award for Excellence in Clinical Teaching from the Hahnemann Medical School. Dr. Yarze has previously served as the Medical Director of the Glens Falls Hospital GI Center and as the Quality Improvement Officer for Northern GI Endoscopy, an office-based ambulatory endoscopy unit.

Dr. Yarze serves on the American Board of Internal Medicine Gastroenterology Board Exam Committee. He presently serves on the Editorial Review Board for Gastrointestinal Endoscopy. Dr. Yarze is a volunteer teacher at Albany Medical College, where he is a Clinical Associate Professor of Medicine. He previously served on the American Society for Gastrointestinal Endoscopy (ASGE) Standards of Practice, Healthcare and Public Policy and Budget and Financial Planning committees. Dr. Yarze implemented and staffs a “free for service” gastroenterology clinic on his weekends off, which serves the uninsured in rural northeastern New York. He has contributed more than 185 articles/book chapters/letters and abstracts in peer-reviewed journals and books. Dr. Yarze is a fellow of the American College of Physicians, the American College of Gastroenterology, the ASGE, the American Gastroenterological Association and the American Association for the Study of Liver Diseases.

Dr. Yarze matriculated into medical school prior to completing undergraduate studies in chemistry at Rutgers University and holds a medical degree from Rutgers Medical School. He completed his internship, residency and fellowship in gastroenterology at the Thomas Jefferson University Hospital, in Philadelphia, Pennsylvania.

Disclosure of External Relationships