Board & Officers

GastroANP Officers

Josh Goldenberg, ND (registered)

GastroANP President

Dr. Goldenberg 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 registered naturopathic doctor, Dr. Goldenberg focuses on integrative approaches to irritable bowel syndrome working in concert with patients’ conventional gastroenterologists.

Megan Taylor, ND

GastroANP Vice President

Dr. Megan Taylor is a licensed naturopathic physician practicing in Seattle, WA. She earned her doctorate in naturopathic medicine from NUNM in 2015, graduating with honors. In addition to providing naturopathic primary care, Dr. Taylor has particular interest in working with children and adults on digestive health, allergies, and autoimmune disease. Her schooling and post-graduate mentorship focused in the field of naturopathic gastroenterology, and she continues to be mentored by leaders in the field, Steven Sandberg-Lewis, ND  and Allison Siebecker, ND, LAc on the diagnosis and treatment of specific conditions such as Inflammatory Bowel Disease (IBD), Irritable Bowel Syndrome (IBS), and Small Intestinal Bacterial Overgrowth (SIBO), among others.

Prior to attending NCNM, Dr. Taylor received her bachelor’s degree in 2007 from Lewis and Clark College in Portland, Oregon and worked for several years in environmental and urban planning. When not working hard as a physician, Dr. Taylor spends as much time as possible in her garden, on the yoga mat, cooking delicious meals, and enjoying her family and friends.

Mark Davis, ND

GastroANP Secretary

Dr. Davis 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 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 Fecal Transplant Foundation. Learn more at and

Adam Sandford, ND

GastroANP Treasurer

Dr. Adam Sandford practices primary care with an emphasis on hormonal and gut health in El Segundo, California.  His approach towards medicine is that all medical tools are valid and have their place, whether diet or drugs, exercise or surgery – the art of medicine for the Naturopathic Medical Doctor is working with each patient to help select the approach that is most right for them, for who they are today and who they want to be tomorrow.  His emphasis with the GastroANP is to help drive creation of best in class common practices for the most prevalent, and challenging, GI concerns.

GastroANP Board Members

Andrew Day, ND

Dr. Day practices primary care medicine at Bastyr Center For Natural Health in the Seattle, WA. He trained for two years as a resident at the Bastyr Center for Natural Health and served as adjunct faculty at Bastyr University.  He is a regular contributor to Dr. Journal Club, an online site which provides education to medical providers interested in complementary and alternative medicine. He is on the board of directors of the Naturopathic Academy of Primary Clinicians as well as the board of directors of the GastroANP.  He is currently involved in multiple research endeavors which seek to better characterize the practices naturopaths use in the treatment of IBS.

Crane Holmes, ND

Dr. Crane Holmes is a licensed naturopathic physician who strives to provide high-quality, compassionate and individualized care. He completed two years of medical residency under Dr. Steven Sandberg-Lewis and NUNM Health Centers focusing on gastroenterology and primary care. He continues to collaborate with NUNM as an adjunct professor teaching dermatology, minor surgery, and gastroenterology. He is also currently involved in a 2-year homeopathy intensive with the New England School of Homeopathy.

When he is not in clinic, Dr. Holmes can be found fly fishing, hiking, traveling, gardening and spending time with friends. He is also an avid Portland Timbers fan and hopes to improve his musical abilities. Learn more about Dr. Holmes at

Dr. MillerDanielle Miller, ND

Dr. Miller is the founder and medical director of Nutima Integrative Medicine, an interdisciplinary, integrative medical clinic in Seattle, Washington where she consults on patient’s cases from around the globe. Dr. Miller specializes in gastroenterology, epigenetics, and neurological health, but her primary focus for all of her patients is healing their digestive tracts, as she believes that one cannot be free from disease if their digestion is not working properly.

Dr. Miller has contributed to articles in Prevention Magazine and the Farmer’s Almanac Herbal Remedies Magazine.  She is currently working on the third volume of Natural Approach to Gastroenterology textbook alongside her mentor, Dr. Eric Yarnell, who also works with her at Nutima Integrative Medicine.

Dr. Miller obtained two bachelors degrees from Santa Clara University, the first in combined sciences with a minor in biology and the second in psychology.  She then went on to earn her doctorate in naturopathic medicine from Bastyr University in Washington.  Learn more about Dr. Miller at

Emily Burke, ND

Dr. Burke is a licensed Naturopathic Doctor practicing in Portland, Oregon, and a 2014 alumna of the National University of Natural Medicine. In 2015-2017, while in practice with Dr. Mark Davis, she completed post-doctoral studies in advanced microbial medicines and the natural treatment of IBS & IBD, with special focus on the use of fecal microbiota transplant (FMT) to treat refractory Clostridiodes difficile infection. It is the particular mission of her practice to continue to provide and promote the safe and effective use of FMT in clinical care.

In her free time Dr. Burke enjoys camping, knitting, cooking and sharing meals with friends, and spending quality time with her dog Cedar.