Andrew Lange N.D.  is a Naturopathic Physician. He served as Chair of the Department of Homeopathic Medicine and Supervising Clinical Physician at Bastyr University in Seattle. He has taught internationally, serving on the faculty of the College of Homeopathy in London.

He began his training under homeopathic physicians, Marion Belle Rood M.D. and Alan Sutherland M.D., and has studied with George Vithoulkas in the U.S. and Greece.  He studied cardiology with Ken Eyer M.D. and osteopathy with Dan Bensky D.O. He has consulted in clinics of natural therapeutics in Europe and India.

After attending Goddard College in Vermont, he received his Bachelor of Science from Evergreen State College in Washington.  He graduated from Bastyr University in Seattle and received his license to practice in the State of Washington in 1984. 

Dr. Lange is the author of Getting to the Root: Treating the Deepest Source of Disease and a contributing author to A Textbook of Natural Medicine by Pizzorno and Murray.

He lives in Boulder, Colorado.