About ACG

More than 14,000 physicians from 86 countries are members of the ACG. Through annual scientific meetings, The American Journal of Gastroenterology, regional postgraduate training courses and research grants, the ACG provides its members with the most accurate and up-to-date scientific information on digestive health and the etiology, symptomatology and treatment of GI disorders. ACG’s advocacy in the public policy arenas, and the work of the ACG’s 22 committees have made tremendous strides with many premiere accomplishments to improve the future of clinical gastroenterology and the quality of care available to patients with GI conditions and diseases, today. The information exchange and training acquired through College membership provide physicians with the knowledge necessary to offer the most effective patient care and to meet the challenges of today’s changing health care system. For more information about becoming a member, click here.

Vision and Mission

Our vision is to be the pre-eminent professional organization that champions the evolving needs of clinicians in the delivery of high quality, evidence-based, and compassionate health care to gastroenterology patients.

Our mission is to advance world-class care for patients with gastrointestinal disorders through excellence, innovation and advocacy in the areas of:

  • Scientific investigation
  • Education
  • Prevention
  • Treatment

Return to Top

2017-2018 ACG President


Irving M. Pike, MD, FACG

Irving M. Pike, MD, FACG, a physician hospital executive and expert on endoscopic quality indicators, is the 2017-2018 President of the American College of Gastroenterology. Dr. Pike currently is Senior Vice President and Chief Medical Officer at John Muir Health in Contra Costa County, CA, a role he assumed in 2012. There he serves as a key member of John Muir Health’s executive leadership team, providing medical and clinical leadership, expertise and perspective to the executive team, medical staff and clinical employees throughout the organization. Dr. Pike also plays a key role in the development and execution of business strategies that support the organization’s growth. At John Muir Health, he continues to be active as a gastroenterologist and also provides GI care as a volunteer for a local indigent clinic. Additionally, Dr. Pike serves as President of the John Muir Specialty Medical Group.

Before his move to John Muir Health, Dr. Pike had practiced gastroenterology in Virginia Beach, VA since 1983. He spent 12 years as a physician executive with non-profit Sentara Healthcare in southeastern Virginia as Vice President of Medical Affairs, Medical Director Physician Education, and Medical Director Care Management. In his role as Vice President for Medical Affairs at Sentara, Dr. Pike had responsibility for patient safety, care management and care delivery, including clinical quality improvement, as well as medical staff leadership development and education. 

From 1986 to 2012, Dr. Pike was Assistant Professor of Clinical Internal Medicine at Eastern Virginia Medical School. After earning his medical degree from the Medical College of Georgia, Augusta, GA, Dr. Pike completed his internship and residency in internal medicine at Southwestern Medical School, University of Texas Health Science Center in Dallas, and his fellowship in gastroenterology at the University of Texas Health Sciences Center, Dallas, TX.

Dr. Pike is the Founding Director and, from 2009 to 2017, served as the President of the GI Quality Improvement Consortium Ltd. (GIQuIC), an educational and scientific 501(c)(3) organization established by physicians specializing in gastroenterology. The GIQuIC’s purpose is to improve the quality of gastroenterology patient care throughout the United States and abroad. GIQuIC is a joint venture of the ACG and the American Society for Gastrointestinal Endoscopy (ASGE). When Dr. Pike stepped down as GIQuIC President this year, its Board of Directors named Glenn M. Eisen, MD, MPH, FASGE, as the new GIQuIC President.

The GIQuIC grew out of Dr. Pike’s experience from 2006 to 2009 at Sentara Healthcare in Virginia. There he successfully completed a pilot project whereby physicians from across the country submitted colonoscopy quality indicator data to a central repository, using diverse methods of submission. This included extraction both from paper charts and endowriter software. These data collection strategies demonstrate different methodologies and devices, for recording endoscopy procedures, can benchmark using a central data repository. Additionally, benchmarking reports can be used to provide physicians feedback on their performance. In 2009, ACG and ASGE agreed to take over the project and roll it out nationally. They jointly established GIQuIC as a non-profit educational and scientific organization.

A member of the ACG Board of Trustees since 2007, Dr. Pike has served as an officer of the College since 2013. In 2015, he was selected by the ACG President to deliver the Emily Couric Memorial Lecture, “National Registry Benchmarking for Colonoscopy Quality: The ‘High Road’ Toward Improving the Performance of Colonoscopy and Cancer Prevention.” Dr. Pike has contributed as a member of the ACG Credentials Committee (2000-2001) and Practice Management Committee (2002 to present; Chair, 2004 to 2007.) He also served as Co-Chair of an ACG-ASGE Joint Task Force for Development of Endoscopic Quality Indicators (2005 to 2006.) He also served as Co-Chair on the updated papers that were published in 2015.

A noteworthy speaker and educator, Dr. Pike has presented frequently on the business of health care, endoscopic quality indicators, and physician leadership topics. From 2014 to 2017, Dr. Pike was named by Becker’s Hospital Review as one of “100 Hospital and Health System CMOs To Know,” and from 2010 to 2016 by Becker’s ASC Review as a “Gastroenterologist To Know.”

Return to Top

2017-2018 Board of Trustees




Irving M. Pike, MD, FACG
Chief Medical Officer
John Muir Health
Walnut Creek, CA



Sunanda V. Kane, MD, MSPH, FACG
Professor of Medicine
Mayo Clinic
Rochester, MN

Vice President


Mark B. Pochapin, MD, FACG
Director, Division of Gastroenterology
NYU Langone Medical Center
New York, NY



Samir A. Shah, MD, FACG
Clinical Professor of Medicine, Warren Alpert Medical School of Brown University
Chief of Gastroenterology, The Miriam Hospital
Gastroenterology Associates, Inc.
Providence, RI



David A. Greenwald, MD, FACG
Director of Clinical Gastroenterology and Endoscopy
Mount Sinai Hospital
New York, NY

Immediate Past President


Carol A. Burke, MD, FACG
Director, Center for Colon Polyp and Cancer Prevention
Head, Section of Polyposis, Sanford R. Weiss, MD Center for Hereditary Colorectal Neoplasia
Department of Gastroenterology and Hepatology, Department of Colorectal Surgery and Taussig Cancer Institute
Cleveland Clinic
Cleveland, OH

Past President


Kenneth R. DeVault, M.D., FACG
Professor of Medicine
Chair, Department of Medicine
Mayo Clinic
Jacksonville, FL

Director, ACG Institute


Nicholas J. Shaheen, MD, MPH, FACG
Professor of Medicine and Epidemiology
Director, Center for Esophageal Diseases and Swallowing
University of North Carolina School of Medicine
Chapel Hill, NC

Chair, Board of Governors


Costas H. Kefalas, MD, MMM, FACG
Associate Professor of Internal Medicine, Northeast Ohio Medical University
Akron Digestive Disease Consultants, Inc.
Akron, OH

Vice Chair, Board of Governors


Douglas G. Adler, MD, FACG
Professor of Medicine
Director, Gastroenterology Fellowship Program
University of Utah School of Medicine
Director of Therapeutic Endoscopy, Huntsman Cancer Center
Salt Lake City, UT

Trustee for Administrative Affairs


Delbert L. Chumley, MD, FACG
Partner, Gastroenterology Consultants of San Antonio
San Antonio, TX

Co-Editor, AJG


Brian E. Lacy, MD, PhD, FACG
Senior Associate Consultant
Mayo Clinic
Jacksonville, FL

Co-Editor, AJG


Brennan M. R. Spiegel, MD, MSHS, FACG
Professor of Medicine and Public Health, UCLA David Geffen School of Medicine
Director of Health Services Research, Cedars-Sinai Health System
Director, Cedars-Sinai Center for Outcomes Research and Education (CS-CORE)
Los Angeles, CA



William D. Chey, MD, FACG
Professor of Medicine
H. Marvin Pollard Institute Scholar
Director, GI Physiology Laboratory
Co-Director, Michigan Bowel Control Program
University of Michigan Health System
Ann Arbor, MI


Immanuel K. H. Ho, MD, FACG
Clinical Professor of Medicine
University of Pennsylvania School of Medicine
Philadelphia, PA


Caroll D. Koscheski, MD, FACG
Gastroenterology Assoc. P.A.
Hickory, NC


Paul Y. Kwo, MD, FACG
Professor of Medicine
Stanford University
Palo Alto, CA


Jonathan A. Leighton, MD, FACG
Professor of Medicine
Mayo Clinic
Scottsdale, AZ


Amy S. Oxentenko, MD, FACG
Associate Professor of Medicine
Internal Medicine Residency Program Director
Associate Chair, Department of Internal Medicine
Mayo Clinic
Rochester, MN


Daniel J. Pambianco, MD, FACG
Charlottesville Gastroenterology Associates
Director of Endoscopy, Martha Jefferson Hospital
Charlottesville, VA


David T. Rubin, MD, FACG
Joseph B. Kirsner Professor of Medicine
Section Chief, Gastroenterology, Hepatology and Nutrition
Co-Director, Digestive Diseases Center
The University of Chicago Medicine
Chicago, IL


John R. Saltzman, MD, FACG
Professor of Medicine, Harvard Medical School
Director of Endoscopy
Director, Advanced Endoscopy Fellowship Program
Brigham and Women’s Hospital
Boston, MA

Return to Top

ACG Headquarters

During the first week of February 2005, the American College of Gastroenterology moved into its new national headquarters building located in Bethesda, Maryland. In recognition of the continued outstanding growth in membership and programming, the move is designed to permit the College’s administrative staff to better serve the needs of the organization and its members. The new space provides a significant upgrade in the amount of work-space and will permit the College to meet its administrative staffing needs for the foreseeable future.

The move to increase administrative capacity is an outgrowth of the review of the College’s capabilities and resources that began in 2001 with then President Edgar Achkar’s appointment of a strategic planning committee and culminated with the ratification of the ACG Strategic Plan in 2002. The College’s Board of Trustees believes all members will benefit from an increased level of service and new and exciting programs that build on the ACG’s unique role as champion of clinical gastroenterology.

ACG Headquarters Interior

Return to Top

75th Anniversary Book

American College of Gastroenterology 1932 – 2007
Seventy-Five Years of Commitment to Clinical Gastroenterology, Gastroenterologists and Patient Health

ACG marked its 75th Anniversary in 2007 and to celebrate our anniversary, we published a book that highlights our history. There is a long list of individuals, members past and present, who contributed to the publication, compiling ACG’s history and various milestones throughout our 75 years. ACG thanks all those individuals who contributed their time to see this book come to fruition. In addition, the Archives Committee put so much of their time into developing this book as well and ACG wishes to recognize the ACG Archive Committee members:

Kevin W. Olden, MD, FACG, Chair
James L. Achord, MD, MACG
V. Alin Botoman, MD, FACG
Mitchell S. Cappell, MD, FACG
Robert E. Kravetz, MD, MACG
Myron Lewis, MD, MACG
Arvey I. Rogers, MD, MACG
Sidney Winawer, MD, MACG
Alvin Zfass, MD, MACG

Committee members want to personally recognize the late Albert C. Svoboda, MD, MACG, who prior to his passing, dedicated a great deal of his time to see this project come to fruition. A special acknowledgement of Dr. Svoboda is included in the book.

PDFs of each chapter may be found below:

Table of Contents, Dedication, Foreword, Acknowledgements and Timeline

Chapter 1: The Founding and the Early Years, 1932 – 1954
Chapter 2: Growth and Maturity
Chapter 3: Making an Impact
Chapter 4: The College Focuses on Practitioners, Public Education, and Practice
Chapter 5: A Decade of Progress (1997 – 2007)
Chapter 6: Winds of Change: Challenging Issues
Chapter 7: Yesterdays, Today, and Tomorrows: Recollections, Reflections, and perspectives from Past Presidents
Chapter 8: Awards and Lectures

Return to Top