Gastroenterology Conference Speakers

Lisa Shaver, ND, LAc, is a naturopathic physician and acupuncturist in Portland, Oregon whose practice focuses on gastrointestinal disorders such as celiac disease/non-celiac gluten sensitivity (NCGS), GERD, abdominal pain, SIBO, IBS and other digestive distresses and disorders. Other expertise areas include hormonal imbalances, autoimmune conditions and neurotransmitter balancing. Dr. Shaver is past president and past board member of the Gastroenterology Association of Naturopathic Physicians and is a current member. She is a past member and co-founder of the SIBO Center for Digestive Health at National University of Natural Medicine. She holds the position of branch manager for the Gluten Intolerance Group of Portland, a monthly gluten-free educational, community and support group in Portland, since 2008.  She serves on the board of Camp Blue Spruce, a gluten-free, allergy-free summer camp for kids in Oregon. She is an active member of Portland Bureau of Emergency Management’s Neighborhood Emergency Team. Dr. Shaver has lectured at numerous national conferences, including the Integrative SIBO Conference, SIBO Symposium, American Association of Naturopathic Physicians National Conference, Naturopathic Gastroenterology Conference, Institute of Women’s Health and Integrative Medicine, Food As Medicine Conference, amid other speaking engagements, interviews, webinars (most recently the SIBO SOS Summits) and podcasts. Dr. Shaver is a guest lecturer at NUNM’s Advance Gastroenterology class lecturing on celiac disease and non-celiac gluten sensitivity since 2012.


JGoldenberg headshot.jpgJoshua Goldenberg, ND, is a researcher, teacher, registered naturopathic doctor and founder of Dr. Journal Club, LLC. He is most passionate about the interplay of evidence and clinical practice. Dr. Goldenberg is an active researcher with numerous publications in high impact scientific journals such as JAMA, Annals of Internal Medicine and The Cochrane Library. His research focus includes irritable bowel syndrome, probiotics, evidence-informed practice, and research methodology. He is currently Research Investigator at the Bastyr University Research Institute and Visiting Research Scholar at the University of Technology Sydney. He has presented nationally and internationally on evidence-based medicine as well as probiotics and research methodology. His probiotics work has been highlighted by the BBC, The New York Times, The Seattle Times, Prevention Magazine, and Fox News. Dr. Goldenberg is a passionate educator and currently is faculty for the Academy of Integrative Health and Medicine’s Interprofessional Fellowship in Integrative Health and Medicine, where he teaches critical evaluation of the literature and evidence-informed practice. He is past adjunct faculty at Bastyr University, his alma mater, in which he enrolled after receiving honors and distinction in molecular biology from the University of Pennsylvania. He also guest lectures widely. As a naturopathic doctor Dr. Goldenberg focuses on integrative approaches to irritable bowel syndrome as well as other gastrointestinal complaints working in concert with patients’ conventional gastroenterologists. In 2014 Dr. Goldenberg created the medical education website in order to share his passion for the interplay of evidence and clinical practice with the larger integrative medicine community.


photo.jpgIlana Gurevich, ND, LAc, is a naturopathic physician and acupuncturist who graduated from the National University of Natural Medicine in 2007 and 2008. She is currently co-owner of two large integrative medical clinics, one in northwest Portland and one in northeast Portland. She runs a very busy private practice specializing in treating inflammatory bowel disease as well as IBS/SIBO and functional GI disorders. She lectures extensively and teaches about both conventional and natural treatments for inflammatory bowel disease as well as SIBO. She is one of the foremost experts on the intersection of IBD and IBS and how treating one resolves the other. Dr. Gurevich also acts as a mentor in the naturopathic community educating about GI disorders. She supervises residents and consults with physicians about their most difficult GI cases. Dr. Gurevich was nominated as one of Portland Top Docs by the Portland Monthly in both 2014 and 2016.


Image result for megan taylor ndMegan Taylor, ND, practices integrative primary care and naturopathic gastroenterology for adults and children with digestive complaints, allergies, and autoimmune disease in Seattle, WA. Dr. Taylor earned her doctorate in naturopathic medicine from National University of Natural Medicine in Portland, OR, graduating with honors. She completed two years of post-graduate residency training in primary care and naturopathic gastroenterology under the mentorship of Steven Sandberg-Lewis, ND and Allison Siebecker, ND, LAc. She has advanced training in the diagnosis and treatment of specific conditions such as GERD, Gastritis, Inflammatory Bowel Disease, including microscopic colitis, gallbladder and liver disorders, Functional abdominal pain, Functional dyspepsia, Visceral Hypersensitivity, Irritable Bowel Syndrome, and Small Intestinal Bacterial Overgrowth (SIBO), among others. For more information about Dr. Taylor and her practice, visit her website at


Caitlin O’Connor, ND,  provides Naturopathic care with a focus on women’s and children’s health. She pairs a philosophy of patient-centered, whole body, individualized care with an emphasis on nutrition, botanical medicine and a balanced approach to healthy living.  She practices in Denver, Colorado, where she has been active in the political process regulating naturopathic doctors.  She graduated from Bastyr University in 2008 with a Doctorate of Naturopathic Medicine and a certificate in Naturopathic Midwifery.  In addition to teaching at the Nutrition Therapy Institute, she has presented for both lay and professional audiences including the American Association of Naturopathic Physicians, Colorado Midwifery Association, the Colorado Association of Naturopathic Doctors and the Pediatric Association of Naturopathic Physicians.   In the clinic, she strives to provide skilled, compassionate guidance with a focus on optimal patient outcomes.  At home, she tries to be a centered and present mother, a caring partner and good friend to both herself and others.


Mark Davis ND web pic 2016.jpgMark Davis, ND, practices at the IBD Specialty Center in Silver Spring, Maryland. He’s also licensed to practice in California, Oregon, and the District of Columbia, where he sees patients by appointment. He’s a 2011 graduate of National University of Natural Medicine and a full-time instructor at Maryland University of Integrative Health. Dr. Davis is internationally respected as an expert on fecal microbiota transplantation (FMT) and helminthic therapy, and is a frequent author and lecturer. He’s on the editorial board of the Natural Medicine Journal, and the board of directors of the Gastroenterology Association of Naturopathic Physicians and the Fecal Transplant Foundation. Learn more at and


170728_jamie_corroon-131 Low Res.jpgJamie Corroon, ND, MPH, is the founder and Medical Director of the Center. Dr. Corroon is a licensed Naturopathic Doctor, peer-reviewed clinical researcher and industry consultant with a focus on medical Cannabis. He is also a Post-Doctoral Research Fellow at National University of Natural Medicine. Dr. Corroon earned a Doctor of Naturopathic Medicine degree from Bastyr University in Seattle, Washington, a leader in naturopathic education and integrative medicine research. He subsequently completed two years of residency at the Bastyr Center for Natural Health, and is a former adjunct professor at Bastyr University California. Dr. Corroon earned a Masters in Public Health in Epidemiology from San Diego State University and a bachelor’s degree in Political Science and Business Administration from the University of Southern California. Dr. Corroon has completed certification programs from both the Society of Cannabis Clinicians and the American Academy of Cannabinoid Medicine. He is a member of both organizations. Dr. Corroon is committed to investigating the important clinical and public health questions resulting from the broadening acceptance of Cannabis in society. He lives in San Diego, California


hill_S01-9939_1mpix.jpgAnne Hill, ND, has practiced as an herbalist and craniosacral therapist since 1994.  She decided to attend NUNM (then known as NCNM) and graduated, becoming an Oregon licensed naturopathic physician in 2003. She has also been trained in the traditional eastern Indian medicine, Ayurveda, which she incorporates into patient care.  Dr. Hill has a private practice in Portland, Oregon. She specializes in general family practice, environmental medicine, endocrinology, and chronic infectious disease.  Dr. Hill is has been an educator as long as she has been a physician, holding private seminars on craniosacral therapeutics, and guest teaching and lecturing on medical topics at various alternative medicine programs across the United States. In her free time Dr. Hill enjoys hiking in the Pacific Northwest with her husband and two children, laying in the sun with her cat and experimenting in the kitchen.


Steven Sandberg-Lewis, N.D., has been a practicing naturopathic physician since his graduation from National College of Naturopathic Medicine (now NUNM) in 1978. He has been a professor at NUNM since 1985, teaching a variety of courses but primarily focusing on gastroenterology and GI physical medicine. His clinic rotations are particularly popular among NUNM doctoral students. In addition to supervising clinical rotations, he also maintains a part-time practice at 8 Hearts Health & Wellness in Portland. He is a popular international lecturer at functional medicine seminars; presents webinars; writes articles for NDNR and the Townsend Letter; and is frequently interviewed on issues of digestive health and disease. Dr. Sandberg-Lewis is the author of 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 U.S. for small intestine 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 was inducted into the OANP/NUNM Hall of Fame. Within gastroenterology, he has special interest and expertise in inflammatory bowel disease (including microscopic colitis), irritable bowel syndrome (including post-infectious IBS), small intestine 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 also can assess function and often find successful treatments to regain a balance in the digestive system.


Eliot W. Edwards, ND, FABNO, is a 2002 graduate from National College of Naturopathic Medicine where he earned his Doctor of Naturopathic Medicine degree. His undergraduate degree was in physics and chemistry which he earned in 1990 from State University of New York College at Oneonta.  Dr.  Edwards was in private practice in upstate New York from 2002-2009. From January 2009 to August 2017 he practiced with the Naturopathic Medicine Department at Cancer Treatment Centers of America, in Zion, IL.  At CTCA he provided naturopathic support in an integrative oncology setting, working collaboratively with medical oncologists. He was also a Clinic instructor at National University of Health Science in Lombard, IL and has lectured extensively to community groups as well as health care practitioners on naturopathic medicine and integrative healthcare.  In April, 2013 he became a Fellow to the American Board of Naturopathic Oncologists (FABNO) after completing a rigorous application process and passing Board Certification examination. Dr. Edwards is a strong advocate for naturopathic medicine and has been very involved over the years with the AANP, NYANP, ILANP and now the OANP. He was elected to serve as a Board Member of the AANP starting in January 2019. He currently serves on the American Board of Naturopathic Oncology, Board of Medical Directors.