Meet Our Team

Meet Our Naturopathic Medical Doctors

  • Dr. Colleen Huber

  • Colleen Huber NMD is a Naturopathic Medical Doctor in Tempe, Arizona. She is President of the Naturopathic Cancer Society. She is Co-Founder and Secretary of the American Naturopathic Research Institute / Naturopathic Oncology Research Institute (ANRI / NORI) at She is a Fellow of the Naturopathic Oncology Research Institute. She is the owner and Medical Director of NatureWorksBest Medical Clinic. The data supporting the clinic’s results in cancer treatment can be found here. Dr. Huber was the Principal Keynote Speaker at the 2015 Euro Cancer Summit, and in 2014 was a speaker at the World Congress on Cancer Science and Therapy, and at the International Congress of Naturopathic Medicine. Dr. Huber is a credentialed physician at Phoenix area sub-acute in-patient facilities, where she practices up to the full-scope of practice for naturopathic physicians licensed in Arizona. She graduated from Southwest College of Naturopathic Medicine in Tempe. Many of her health articles have appeared on Her writing includes her book, Choose Your Foods Like Your Life Depends On Them, as well as her cancer treatments and cancer prevention, which have been featured in the Defeat Cancer book. She authored the largest and longest study in medical history on sugar intake in cancer patients, which was reported in thousands of media outlets around the world in 2014. Her academic writing has appeared in The Lancet and Cancer Strategies Journal, and other medical journals. Her original research received media coverage around the U.S., Asia and Europe. You may review Dr. Huber’s Medical License here.

  • Dr. Eric Lopez

  • Dr. Eric Lopez is a licensed Naturopathic Medical Doctor. He graduated from Southwest College of Naturopathic Medicine with a special interest in botanical medicine. His undergraduate studies concentrated on Chemistry and Psychology. His Bachelor of Science degree is from Grand Canyon University

    He actively practices in two clinics, in Surprise, AZ as well as Tempe, where he employs integrative medicine that promote natural ways of healing. He emphasizes educating and inspiring the individual to obtain optimal wellness through better understanding of the body’s innate stabilizing and healing functions.

    Dr. Lopez believes there is a great interest in alternative medicine and for medical care addressing physical limitations. Dr. Lopez has served as a member of the Research Group at Southwest College of Naturopathic Medicine and has co-authored several articles.

    Dr. Lopez is one of very few naturopathic physicians in the United States to have hospital privileges with full scope of practice as licensed in the State of Arizona.

  • Dr. Nick Shah

  • Dr. Nick Shah NMD is a licensed Naturopathic Medical Doctor, offering patient-centered care at NatureWorksBest clinic in Tempe and his practice in Scottsdale. His integrative treatment approach combines evidence-based modern medicine with natural therapies that are designed to optimize health. Along with naturopathic medicine, Dr. Nick has received advanced training in IV nutrient therapy through the American Academy of Environmental Medicine (AAEM) and the International IV Nutritional Therapy Global Physician Education (IIVNTP). 

    He is passionate about helping his patients recover from chronic illness and return to a state of well-being. His interest in oncology further deepened as he observed his father-in-law’s dedication to his patients as an esteemed oncologist in Texas, which continues to serve as a source of inspiration for him. Dr. Nick believes in treating patients holistically, focusing on the whole person and addressing the root causes of disease to stimulate the body’s innate healing capacity.

    Dr. Nick provides a personalized treatment plan for patients, incorporating safe and effective therapies that work in synergy to maximize health outcomes. He is trained in conventional medical treatments and naturopathic modalities such as IV nutrient therapy, nutrition and lifestyle medicine, botanical medicine, neurofeedback therapy, and acupuncture.

    Dr. Nick graduated from the Southwest College of Naturopathic Medicine. He holds a dual Bachelor of Science in Biology and a Bachelor of Arts in French from Texas Tech University, and is fluent in 3 languages (English, French, Hindi). His professional associations include Arizona Naturopathic Medical Association (AzNMA), American Association of Naturopathic Physicians (AANP), and International Society for Neuroregulation & Research (ISNR).

  • Ashley Foster, FNP

  • Ashley Foster, MSN, APRN, FNP-BC is a Board-Certified Family Nurse Practitioner. She graduated from the University of Phoenix with her Master of Science in Nursing in 2021. During her program she became a member of Sigma Theta Tau Honors Society in nursing and a member of the National Society of Leadership and Excellence. She is an Arizona native where she received her nursing degree in 2010. She specialized in Women’s Health for 6 years, family practice for 3 years, and then found NatureWorksBest in January of 2020. She has worked along side Dr. Lopez since starting at NatureWorksBest learning the Botanicals, nutrient IVs, and heading immunotherapy at the clinic. Her goal at NatureWorksBest is to care for others along their journey whether it’s cancer treatment, primary care, or Women’s Health.

    Outside of the clinic, nutrition and fitness are a passion of hers. Prior to FNP school, she owned and managed a fitness center where she focused not only on improving daily physical activity for her clients but also certified to improve their nutrition.

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