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About the Riordan Clinic

Each of our nutrients are chosen by the expert doctors and medical team at the Riordan Clinic based on quality, purity, consistency and effective dosing.

For more than 47 years people have turned to the Riordan Clinic to restore, improve, and maintain health. We continue to specialize in nutritional testing and holistic/naturopathic treatments for sustained illnesses such as cancer, Lyme disease, gut issues, anxiety and depression, autoimmune disorders, diabetes, and more.

Rather than focusing on a diagnosis and managing symptoms, our goal is to discover the root causes of disease. Simply put, we aren’t just looking to label what is wrong with you – we want to find out why the disease occurred in the first place and then to address those causes.

Our doctors combine in-depth nutritional lab testing, a comprehensive medical evaluation, and the utilization of a variety of holistic, non-toxic treatments and services to provide a customized, holistic treatment plan.

Our nutrient store specialists are available to answer questions and process orders Monday through Thursday from 8:00 am - 5:00 pm and Fridays 9:00 am - 4:00 pm. Thank you for visiting the Riordan Clinic Nutrient Store, we look forward to serving you!

The Riordan Clinic is a not-for-profit 501(c)(3), nutrition-based health facility founded in 1975 with two locations in Kansas: Wichita and Overland Park. Learn more about the Riordan Clinic at