Dr. Katie Dahlgren is a board-certified Naturopathic Physician with over 18 years of experience specializing in complex chronic illness and neurological disorders. She is the founder and medical director of Oak Tree Integrative Medicine and Spa in Woodinville, Washington. Dr. Dahlgren earned her bachelor’s degree in biology/pre-med with a minor in psychology from Gonzaga University. She went on to complete her Doctorate in Naturopathic Medicine at Bastyr University in 2007, followed by a rigorous three-year clinical residency. Her clinical focus includes chronic infections, neurological and developmental disorders, Lyme disease, mold illness, and anti-aging medicine. She works with patients of all ages, offering specialized support for children with autism, PANDAS/PANS, and developmental delays, as well as adults with complex and evolving health goals. Dr. Dahlgren is known for creating highly individualized treatment protocols that integrate nutritional and dietary interventions, herbal and homeopathic medicine, hormone therapy, detoxification, energy medicine, pharmaceutical support, and lifestyle modifications.

She is also skilled in advanced therapeutic techniques such as perineural injections for pain management, platelet-rich plasma (PRP) for aesthetic and orthopedic applications, and a wide range of intravenous therapies. Dedicated to continuous learning and professional growth, Dr. Dahlgren regularly attends conferences and collaborates with leaders in integrative and functional medicine. She has been a featured guest on the Better Health Guy podcast, the Gordon Medical Forum podcast, presented at national conferences including The Forum for Integrative Medicine, and The Autism Community in Action, and was published in Autism Advocate Parenting magazine. Dr. Dahlgren is passionate about fostering a therapeutic partnership with her patients—one rooted in mutual respect, trust, and empowerment. She takes pride in making each patient feel truly heard and valued while helping them achieve their health goals through compassionate, evidence-informed care.