Cassie Petro is a Colorado native, Certified Nutritionist (CN) in the state of Washington, and board-certified Certified Nutrition Specialist (CNS) through the Board for Certification of Nutrition Specialists (BCNS) and the American Nutrition Association. She believes that integrative medicine and personalized nutrition are often the missing links in achieving optimal health and long-term wellbeing. Cassie holds a Bachelor of Science in Integrative Health from Metropolitan State University of Denver, as well as a Master of Science in Nutrition and a Master of Science in Global Health from the National University of Natural Medicine in Portland, Oregon.

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After graduate school, Cassie practiced clinical nutrition therapy in Washington State. Although the Pacific Northwest felt like home, she ultimately returned to Colorado to establish her private practice and help expand access to integrative, holistic nutrition care within her community. Witnessing the differences in naturopathic and integrative care between regions strengthened her passion for ensuring more individuals and communities can experience the life-changing benefits of a whole-person approach to healthcare.

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Cassie’s scope of practice includes personalized nutrition therapy with a focus on digestive health, hormonal health, metabolic function, maternal and child health, mental health, and lifestyle medicine. She has spent over a decade deepening her training in evidence-based medicine, trauma-informed care, medical nutrition therapy, and public health. Cassie believes that true healing occurs when clinical care honors both the science of nutrition and the lived experiences of the individual.

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Food is central to our lives, cultures, and health, which is why nurturing a supportive relationship with food is a core pillar of Cassie’s work. Her approach is collaborative, non-prescriptive, and highly individualized—designed to optimize alignment and function within the whole body and mind. Cassie integrates evidence-based nutrition science, functional medicine principles, health coaching, and integrity to help clients reduce internal and external barriers to nourishment through education, empowerment, and sustainable lifestyle change.

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Cassie practices from a weight-inclusive, non-diet framework and does not focus solely on weight loss. She recognizes that weight has little clinical significance on its own and that changes in weight are often symptoms of deeper physiological, emotional, or environmental imbalances. Her work supports clients in learning how to properly nourish their bodies, deconstruct weight stigma and diet culture, and cultivate body neutrality and trust. Rather than controlling or fixing the body, Cassie helps clients understand what their bodies need to feel and function better.

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When working with Cassie, clients can expect to reconnect with their bodies, challenge long-held beliefs around food, gain confidence in meal preparation, and learn how to navigate nutrition information without overwhelm. She works with toddlers, children, teens, and adults, and has extensive experience supporting families across a wide range of health concerns and abilities.

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Outside of clinical work, Cassie enjoys spending time outdoors, gardening, experimenting in the kitchen, and getting lost in a good book. Her hobbies include yoga, mobility training, pickleball, volleyball, and various arts and crafts. Her greatest passion, however, is travel and backpacking—especially experiencing new cultures through food.