Mark Davis, ND

Contact Bright Medicine at or 503.928.7605


Mark Davis is a naturopathic doctor who mostly frequently helps people with chronic digestive problems, especially:

  • Crohn's disease, ulcerative colitis and microscopic colitis
  • C diff colitis
  • Irritable bowel syndrome with or without SIBO
  • Chronic constipation, chronic diarrhea and chronic bloating
  • Unexplained or undiagnosed GI problems
  • Immune problems that may have a root in the GI tract, including MS, celiac disease, and spondyloarthropathies

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, the Fecal Transplant Foundation (treasurer), and on the editorial board of the Natural Medicine JournalHe received his ND with honors in research from the National College of Natural Medicine.

Dr. Davis is licensed by the Oregon Board of Naturopathic Medicine, and a member of the American Association of Naturopathic Physicians and the Oregon Association of Naturopathic Physicians.  When he isn't working he's often at home playing with some combination of four kids and a guitar.

** For sooner availability and a lower cash rate, consider seeing Dr. Emily Burke, who's just completed a clinical training program in FMT, helminthic therapy, and naturopathic gastroenterology with Dr. Davis.**


Scheduling instructions

Select a service below. If you’re seeing Dr. Davis in the office, this is a doctor-patient relationship, and he can supervise your medical care.

If you’ve never had an office visit and you’d like a remote educational consult, these are not doctor-patient visits, and Dr. Davis can only provide his opinion and other information. He can’t contribute to your medical care, order labs, prescribe medicines, or recommend or supervise other interventions unless you’ve seen him in-office in Oregon. A Consultation Disclaimer Form must be filled out and returned by e-mail or fax before a remote consultation begins.

In the “reason for visit” section, please include your Skype ID or phone number as necessary. You’ll receive an email with a link to fill out forms – please look out for it!


Dr. Davis is in-network with the following insurance companies:

  • Aetna
  • Blue Cross/Blue Shield
  • Care Oregon
  • Cigna
  • Lifewise
  • Oregon's Health Co-op
  • Pacific Source
  • Providence
  • United Healthcare