Dr. Sandberg-Lewis is a practitioner of Naturopathic gastroenterology. He has been in practice for over 40
years and has been a professor of gastroenterology at the National University of Natural Medicine
(NUNM) in Portland, Oregon, for 22 years. He continues to engage in patient care at Hive Mind Medicine in Portland, Oregon [...]

Dr. Sandberg-Lewis is a frequent presenter at educational seminars internationally, writes a column entitled Functional Gastroenterology Bolus for the Townsend Letter and is the author of the textbook entitled Functional Gastroenterology: Assessing and Addressing the Causes of Functional GI Disorders (2017, [...] He and his family have also created a comic book explanation of SIBO entitled Nuthin' Funnies about SIBO. Sandberg-Lewis is the focus of numerous podcasts, interviews and webinars.

Dr. Sandberg-Lewis often treats patients whose health conditions have defied diagnosis despite exhaustive medical testing or complex digestive disorders that have not responded to treatment. Areas of special focus include irritable bowel syndrome, SIBO, GERD, hiatal hernia, inflammatory bowel disease (including
microscopic colitis), biliary dyskinesia, gastroparesis and unrelenting nausea.