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Expert Bios

Mark Davis


Mark Davis, ND sees patients at Bright Medicine Clinic, a naturopathic gastroenterology practice in Portland, Oregon. He's one of a handful of physicians in the North America with clinical expertise in fecal microbiota transplantation (FMT), which he offers via retention enema and capsule. He also offers clinical advice regarding helminthic therapy.

He sits on the board of directors of the Gastroenterological Association of Naturopathic Physicians (president), the Fecal Transplant Foundation (treasurer), and on the editorial board of the Natural Medicine Journal. He received his ND with honors in research from the National College of Natural Medicine. He’s currently seeking FDA approval for a clinical trial of FMT caps for adults with upper-GI Crohn’s disease.