NERC Residency Site
Residency Director Biography
Dr. Tori Hudson, Naturopathic Physician, graduated from the National University of Natural Medicine (NUNM) in 1984 and has served the college in several capacities, including: Medical Director, Associate Academic Dean, and Academic Dean. She is currently a clinical adjunct professor at NUNM), Sonoran University of Health Sciences, Bastyr University and the Canadian College of Naturopathic Medicine. Dr Hudson has been in practice for over 40 years, is the medical director of her clinic, “A Woman’s Time” in Portland, Oregon, co-owner and director of product research and education for VITANICA and the program director for the Institute of Women’s Health and Integrative Medicine. She is also the founder and co-director of NERC (Naturopathic Education and Research Consortium), a non-profit organization for accredited naturopathic residencies.
Dr. Hudson has been appointed as a faculty member of the Fellowship in Integrative Health and Medicine, Academy of Integrative Health & Medicine and the Andrew Weil Center for Integrative Medicine at the University of Arizona.
Dr. Hudson was awarded the 1990 President’s award from the American Association of Naturopathic Physicians for her research in women’s health, the 1999 prestigious Naturopathic Physician of the Year award, the 2003 NUNM Alumni Pioneer Award, the 2009 Natural Products Association Pioneer Award, and in 2012 was inducted into the NUNM Hall of Fame. In 2016, she was the recipient of the annual Oregon Association of Naturopathic Physicians’ “Living Legends” award.
In 2021, she received the 2020 American Botanical Council’s prestigious Fredi Kronenberg Excellence in Research and Education in Botanicals in Women’s Health Award for 2020.
She is a nationally recognized author (book: Women’s Encyclopedia of Natural Medicine, second edition, McGraw-Hill, 2008) and the Menopause Companion (2023), speaker, educator, researcher, and clinician. Dr. Hudson serves on several editorial boards, advisory panels, and as a consultant to the natural products industry. She also writes monthly columns and freelance articles for several publications.
Residency Director Biography
The founder and owner of Yellowstone Naturopathic Clinic, Dr. Beeson is a national leader in efforts to advance the quality of naturopathic care and integrate conventional and alternative medicine for patient benefit. She brings 40 years of medical experience to her practice, including a 20-year career as a nurse, certified midwife, physician assistant, and nutritional consultant. Before completing her naturopathic training at Bastyr University, she served in the U.S. Navy Medical Corps, and worked as a hospital and private practice nurse involved in surgery, recovery, acute and chronic care, ICU, psychiatry, allergies, nutrition, and environmental medicine. Dr. Beeson is committed to her Montana community, advancing clinical training for NDs, and collaborating with the conventional medical community.
Seattle Integrative Oncology
Director: Chad D. Aschtgen, ND, FABNO
2859 Eastlake Ave E.
Seattle, WA 98101
Residency Director Biography
Dr. Aschtgen is board certified in naturopathic oncology and specializes in integrative cancer care. He received his Doctorate of Naturopathic Medicine from Bastyr University in Seattle, Washington and subsequently completed a two-year, hospital-based naturopathic medical residency at Cancer Treatment Centers of America (CTCA), near Chicago, Illinois.
Upon returning to the Pacific Northwest in 2008, Dr. Aschtgen founded Seattle Integrative Oncology, which serves patients in Seattle, as well as Olympia and Everett – at Providence Regional Cancer Systems.
Dr. Aschtgen is an active member of numerous professional organizations:
Washington State Board of Naturopathy
Finally, he serves as the Washington State Governor appointed chair of the state Board of Naturopathy.
Kwan Yin Healing Arts Center
Directors: Stefani Hayes, ND, LAc
2330 NW Flanders St #101
Portland, OR 97210
Residency Director Biography
Stefani Hayes, ND, LAc is a Naturopathic Doctor and Licensed Acupuncturist in Portland, Oregon. She practices at Kwan Yin Healing Arts Center, West – a large integrative natural medicine clinic. Dr. Stefani Hayes loves offering a collaborative model of care to her patients. Her practice focuses on addressing women’s health and fertility concerns from a holistic perspective. She is skilled in addressing complex fertility cases by using an integrative, whole-body approach. She is specially trained in the Arvigo Techniques of Maya Abdominal Therapy, for fertility, pregnancy, and postpartum, as well as skilled in performing non-hormonal Intrauterine Inseminations (IUI). Dr. Stefani’s passion is assisting all types of families in realizing their goals of pregnancy. Her favorite experience is supporting single women and all types of couples through their preconception and fertility journey, adjunctively throughout pregnancy, and into a vital postpartum time.
Residency Director Biography
Dr. Ilana Gurevich, ND, FABNG, LAc, MSOM, is a naturopathic physician, licensed acupuncturist, and Fellow of the American Board of Naturopathic Gastroenterology. A digestive health expert with more than 20 years of clinical experience, she specializes in integrative approaches to complex gastrointestinal conditions. Dr. Gurevich focuses on restoring the body’s innate capacity to heal, particularly for patients whose symptoms persist despite conventional treatment.
Her clinical work centers on conditions such as irritable bowel syndrome (IBS), chronic diarrhea and constipation, abdominal pain, gastroesophageal reflux disease (GERD), Crohn’s disease, and ulcerative colitis. She develops individualized, whole-person treatment plans that address underlying drivers of disease while partnering with patients to create sustainable strategies for long-term health.
Dr. Gurevich earned her medical degree from the National University of Natural Medicine, the oldest accredited naturopathic medical school in the United States. She is also a Fellow of the American Board of Naturopathic Gastroenterology (FABNG), a distinction that reflects advanced post-doctoral training and expertise in naturopathic gastroenterology.
Integrated Health Clinic
Director: Gurdev Parmar, ND, FABNO
13585 16th Avenue
Surrey, B.C., V4A 1P6
Canada
Residency Director Biography
Dr. Gurdev Parmar is co-founder and medical director of the Integrated Health Clinic . He holds licensure in both British Columbia and Washington State.
Dr. Parmar has established The Parmar Foundation , Canadian non-profit funding research in integrative oncology (IO), raising awareness of IO, and funding IO patient care. Last year, the research team of the Parmar Foundation in conjunction with IHC published his clinic’s data on stage 4 colorectal cancer and glioblastoma multiforme in 2025 (https://pubmed.ncbi.nlm.nih.gov/?term=Parmar+Gurdev).
Dr. Parmar is residency director and primary teaching supervisor of a naturopathic oncology residency. IHC is a CNME-approved post-doctoral training facility for Bastyr University. Dr. Parmar established locoregional hyperthermia treatment in Canada in 2009, and was nominated President of the International Clinical Hyperthermia Society (ICHS) in 2018. He has served on numerous boards over the years, including an appointment to the OncANP Delphi Panel which has begun building consensus statements for the naturopathic oncology field.
Dr. Parmar writes and lectures internationally on a wide variety of cancer-related topics. He has served on the editorial board of several medical journals and is the Lead Author and Editor-in-Chief of the Textbook of Naturopathic Oncology: A Desktop Guide of Integrative Cancer Care. Previous resident Dr. Sarah Soles, ND, FABNO contributed to this. He recently published Arming the Immune System: The Incredible Power of Natural Immunity & the Fever Response. He has recently released a course called the Advanced Integrative Oncology Palliative Care Course (https://integrativeoncologyinstitute.ca/advanced-integrative-oncology-palliative-care-course/).
Dr. Parmar received the OncANP 2024 President’s Award that is selected annually by the President of the organization and given to the member who exemplifies the profession and helps contribute to the advancement of OncANP and its vision and mission.
Naturopathic Family Medicine
Director: Krystal Richardson, ND
Naturopathic Family Medicine
8537 Phinney Ave N.
Seattle, WA 98103
West Seattle Natural Medicine
3256 California Ave SW
Seattle, WA 98116
Residency Director Biography
Dr. Richardson is a Licensed Naturopathic Physician in the state of Washington and a primary care physician. She is the owner of both Naturopathic Family Medicine (located in Fremont) and Natural Healthcare NW (located downtown). Dr. Richardson received her doctorate degree from Bastyr University. In addition, she completed a residency in family medicine with a focus in pediatrics under her mentor Dr. Tamara Cullen Evans. She earned her Bachelor’s degree in Plant Biology and graduated from Michigan State University with honors.
Dr. Richardson enjoys working with all ages and especially loves working with families. Dr. Richardson is passionate about understanding the cause of illness and educating her patients to help them make the most informed, least invasive decisions regarding the health of themselves and their family. The relationships she cultivates with her patients is extremely important to her and essential to helping her understand each of her patients as individuals. Dr. Richardson is very comfortable and knowledgeable in both conventional treatment options and alternative options and will help you determine what is best for you.
AIMS Institute
Director: Leanna Standish, ND, PhD, LAc, FABNO
2825 Eastlake Ave E #115,
Seattle, WA 98102
Residency Director Biography
Dr. Standish is a neuroscientist and naturopathic physician living and working in Seattle WA. She holds faculty appointments at the University of Washington School of Medicine in the Radiology Department as well as at Bastyr University. She specializes in integrative oncology and neurology. She leads cancer research teams and holds an FDA IND for a phase I clinical trial of ayahuasca, a psychoactive Amazonian tea.
Dr. Standish is board certified in naturopathic oncology. Her research is focused on the Asian medicinal mushroom Trametes versicolor in the treatment of breast and prostate cancer; functional brain imaging in the treatment of brain cancer; and the development of integrative oncology outcomes studies. New projects using IV Resveratrol and IV Curcumin to treat cancer are being developed.
She has provided adjunctive naturopathic medical care to hundreds of cancer patients, and has worked collaboratively with Seattle area oncologists to provide integrated conventional/CAM care. A founding board member of the Oncology Association of Naturopathic Physicians, Dr. Standish was board-certified in naturopathic oncology in 2006. Her recognition by the oncology community as an expert in naturopathic medicine is evidenced by her being voted one of Seattle’s Best Physicians in the Seattle Metropolitan Magazine in 2002, 2004 and 2008. She has been a member of both the NIH and the Department of Defense study sections for scientific review of CAM research in cancer. Dr. Standish has served as a CAM oncology advisor to MD Anderson Cancer Center.
2021 – Oncology Association of Naturopathic Physicians (OncANP) Board of Directors
Collaborative Natural Health Partners
Director: Lauren Young, ND
315 East Center St
Manchester, CT 06040
Residency Director Biography
Dr. Lauren Young studied health psychology at the University of Connecticut and was involved in research on cardiovascular health at UCONN Medical Center. She received her doctorate in naturopathic medicine from the University of Bridgeport. Dr. Young worked in many integrative settings, from acupuncture for detoxification at Lincoln Memorial Hospital to naturopathic care at Yale affiliated Griffin Hospital. She has worked in integrative settings, side by side gastroenterologists and other specialists offering evidence based natural medicine to enhance conventional treatment and support the body’s natural ability to heal.
Inner Gate Health and Wellness
Director: Heather Krebsbach, ND
1421 SE Ankeny St,
Portland, OR, 97214
Residency Director Biography
Dr. Heather Krebsbach is a functional medicine naturopathic doctor and licensed acupuncturist with nearly two decades of experience supporting patients through all stages of life. Her clinical focus includes hormone and thyroid health, digestive wellness, fertility, autoimmune conditions, and adjunctive cancer care. While she is not a primary care physician, Dr. Krebsbach provides collaborative, systems-based care that complements your existing healthcare team.
A Whole-Person Approach to Healing
Dr. Krebsbach’s passion for medicine began during a formative six-month sabbatical in India, where she explored Eastern healing traditions and developed a deep appreciation for treating the whole person. That experience sparked her commitment to identifying and treating the root causes of illness while addressing the broader systems that influence health.
Her approach blends the best of modern and traditional medicine. She combines nutraceuticals, botanical medicine, lifestyle therapy, acupuncture, regenerative injections, and prescription treatments—including hormone replacement therapy (HRT)—to create comprehensive, individualized care plans. She emphasizes endocrine and digestive health as key drivers of energy, vitality, and long-term wellness.
Specialized Training and Experience
Dr. Krebsbach earned her doctorate from the National University of Natural Medicine (NUNM), where she completed dual degrees in Naturopathic and Classical Chinese Medicine. She has trained closely with leading physicians in women’s health, oncology, endocrinology, and HIV care. Following her graduation, she completed a two-year residency focused on integrative cancer care and has remained deeply involved in mentoring and education ever since. Dr. Krebsbach also helped establish a nationally accredited naturopathic residency program at Inner Gate Health & Wellness, where she continues to train and support the next generation of naturopathic physicians.
She is nationally board-certified and licensed in Oregon, with a longstanding commitment to evidence-informed, patient-centered care.