Stephen D. Phinney is a Professor of Medicine Emeritus at the University of California-Davis. He is on the editorial board of the American Journal of Clinical Nutrition and has twenty-five years of clinical experience as a director of multi-disciplinary weight management programs.

Dr. Phinney received his medical degree from Stanford University, holds a Doctorate in nutritional biochemistry and metabolism from the Massachusetts Institute of Technology and completed post-doctoral research at Harvard University.