Alpha 1 Association
   Organization which attempts to identify those affected by alpha-1-antitrypsin deficiency and to improve their quality of their lives through support, education, advocacy and research.
   http://www.alpha1.org

American Association for the Study of Liver Diseases (AASLD)
   A nonprofit, member organization serving the educational and scientific needs of its physicians, researchers, and scientists, who are striving to prevent and cure diseases of the liver and biliary tract.
   http://www.aasld.org/

American Board of Internal Medicine
   The site includes information on certification, examinations, policies, and publications of the ABIM subspecialties(eg. internal medicine, gastroenterology).
   http://www.abim.org/

American College of Gastroenterology
   Organization involved in study and treatment of disorders of the gastrointestinal tract. The College promotes medical education and attempts to meet the needs of clinical gastroenterology practitioners.
   http://www.acg.gi.org

American Gastroenterological Association
   Organization of physicians, researchers and educators whose primary practice or research involves the functions and disorders of the digestive system. Provides information on new developments, jobs available, and a free medicine database.
   http://www.gastro.org

American Liver Foundation
   Provides information about liver in health and disease, research funding, and patient related information.
   http://www.liverfoundation.org/

American Society for Gastrointestinal Endoscopy
   Represents gastroenterologists, surgeons, and other digestive health specialists who are committed to diagnosis and treatment of GI disease through the appropriate use of endoscopic techniques.
   http://www.asge.org/

American Society of Bariatric Physicians (ASBP)
   National medical society of licensed physicians offering specialized programs in the medical treatment of obesity (bariatrics), weight loss and dieting.
   http://www.asbp.org/

American Society of Colon and Rectal Surgeons
   Society of board certified surgeons. Promotes the science and practice of treatment of patients. Search for a surgeon, research, newsletter, and membership information.
   http://www.fascrs.org/

British Society of Gastroenterology
   Organisation focused on the promotion of gastroenterology within the United Kingdom. It has is composed of physicians, surgeons, pathologists, radiologists, scientists, nurses, dietitians, and others interested in the field of gastroenterology.
   http://www.bsg.org.uk/

CCFA: Crohn's & Colitis Foundation of America
   American organization focused on improving the quality of life of people with Crohn's disease and ulcerative colitis through research. Provides information for both physicians and patients.
   http://www.ccfa.org/

Canadian Association for the Study of the Liver
   Represents a multidisciplinary group of doctors, scientists and health care providers whose expertise focuses on the liver. Committed to improving quality of health care, support education, promote research, and provide a forum for research.
   http://www.lhsc.on.ca/casl/

Canadian Association of Gastroenterology
   Organization of gastroenterology practitioners and researchers based in Canada.
   http://www.cag-acg.org/

Canadian Digestive Health Foundation
   Dedicated to public education and promoting research to improve quality of life of Canadians with digestive disorders and their families.
   http://www.cdhf.ca

Certifying Board of Gastroenterology Nurses and Associates, Inc.
   Focused on the certifying activities of the Board and is complete with examination, handbook, applications, and resource information.
   http://www.cbgna.org/

Cochin Clinical Society
   Clinical Society for the Doctors of all specialities in Cochin, India.
   http://ccsociety.topcities.com

Digestive Disease Week
   Organization of practitioners focused on digestive diseases.
   http://www.ddw.org/

Digestive Disorders Foundation
   United Kingdom based charity which supports research into disorders that can affect the digestive system. Information is provided about various digestive disorders.
   http://www.digestivedisorders.org.uk/

European Association for the Study of the Liver
   Publishes "Journal of Hepatology", with full-text articles online.
   http://www.easl.ch

Helicobacter Pylori Foundation
   Dedicated to providing latest information about Helicobacter pylori, its diagnosis, treatment and clinical correlations.
   http://www.helico.com/

International Foundation for Functional Gastrointestinal Disorders (IFFGD)
   A nonprofit education and research organization whose mission is to inform, assist, and support people affected by functional gastrointestinal disorders or bowel incontinence.
   http://www.iffgd.org/

International Liver Transplantation Society
   Organization focused on promoting education and research by disseminating and exchanging information related to liver transplantation within the medical community, as well as to the public
   http://www.ilts.org/

National Institute of Diabetes and Digestive and Kidney Diseases
   Conducts and supports research on kidney, urologic, hematologic, digestive, metabolic and endocrine diseases, as well as on diabetes and nutrition.
   http://www.niddk.nih.gov/index.htm

North American Society for Pediatric Gastroenterology, Hepatology and Nutrition
   Advances the understanding of the normal development and physiology of diseases of the gastrointestinal tract and liver in infants, children, and adolescents.
   http://www.naspghan.org

OMED: World Organization for Digestive Endoscopy
   International organization which participates in promotion of the study and advancement of gastrointestinal endoscopy and works to establish standards of practice and training in endoscopy.
   http://www.omed.org

Pediatric / Adolescent Gastroesophageal Reflux Association (PAGER)
   Non-profit organization that provides information and support to parents, patients and doctors about Gastroesophageal Reflux (GER).
   http://www.reflux.org/reflux/paghomfa.nsf/($WebPage)/frahome.htm

Society for Surgery of the Alimentary Tract
   The objectives of the society are to stimulate and foster the development of surgical techniques with a focus on diseases of the alimentary tract. Includes practice guidelines for a few digestive diseases.
   http://www.ssat.com/

Society of American Gastrointestinal Endoscopic Surgeons
   Professional society and CME meeting, representing board certified surgeons who use endoscopy and laparoscopy as an integral part of their treatment of patients.
   http://www.sages.org/

The American Society for Parenteral and Enteral Nutrition
   Professional organization whose members are involved in the provision of clinical nutrition therapies, including parenteral and enteral nutrition.
   http://www.clinnutr.org/

The Society of Laparoendoscopic Surgeons
   Non-profit organization dedicated to ensuring the highest standards for the practice of laparoscopy, endoscopy and minimally-invasive surgery.
   http://www.sls.org

World Organisation of Gastroenterology
   Organization with focus on development of gastroenterology worldwide by supporting interaction between affiliated gastroenterological associations and by supporting research, education and ethics.
   http://www.omge.org/