Our People

Steven Sandberg-Lewis, ND, DHANP

Steven Sandberg-Lewis, ND, DHANP

Dr. Steven Sandberg-Lewis (functionalgastroenterology.com) has been a practicing naturopathic physician since his graduation from the National University of Natural Medicine (NUNM) in 1978. He has been a professor since 1985, teaching a variety of courses but primarily focusing on gastroenterology and GI physical medicine. His private practice is at Hive Mind Medicine in Portland, Oregon (hivemindmedicine.org). Hive Mind Medicine is a new collaborative practitioner group focused on digestive and mental/emotional health.

Sandberg-Lewis is a popular international lecturer at Functional Medicine seminars, presents webinars, and is frequently interviewed on issues of digestive health and disease. He is the author of the near-monthly column entitled “Functional Gastroenterology Bolus” in the Townsend Letter and the medical textbook Functional Gastroenterology: Assessing and Addressing the Causes of Functional Digestive Disorders (second edition, 2017). In 2010, he co-founded the SIBO Center at NUNM, which is one of only four centers in the US for small intestinal bacterial overgrowth diagnosis, treatment, education, and research. In 2014, he was named one of the “Top Docs” in Portland Monthly magazine’s yearly healthcare issue, and in 2015, he was inducted into the OANP/NUNM Hall of Fame. He is currently writing a book on gastroesophageal reflux.

Within gastroenterology, he has special interest and expertise in inflammatory bowel disease (including microscopic colitis), irritable bowel syndrome (including post-infectious IBS), small intestinal bacterial overgrowth (SIBO), hiatal hernia, gastroesophageal and bile reflux (GERD), biliary dyskinesia, and chronic states of nausea and vomiting.

Many of the patients referred to Dr. Sandberg-Lewis have digestive conditions that have defied diagnosis and effective resolution. Often these patients desire naturopathic treatment options in lieu of the courses of treatments they have previously undergone. He understands diseases of the gastrointestinal tract but can also assess function and often find successful treatments to regain balance in the digestive system.

Dr. Sandberg-Lewis lives in Portland with his wife, Kayle. His interests include mandolin, guitar, and voice as well as bicycling, writing, and lecturing.