American Gastroenterological Association
4930 Del Ray Avenue
Bethesda, MD 20814
Approximately 16,000 gastroenterologic physicians and scientists belong to this association. Membership is limited to physicians, researchers, and/or educators whose primary practice, research, and/or teaching involves the functions and disorders of the digestive system.
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
9000 Rockville Pike
Bethesda, MD 20892
NIDDK provides information to people with digestive diseases, their families, healthcare professionals, and the general public.