Katherine Duncan, M.D.

Dr. Duncan is board certified in both internal medicine and obesity medicine. Her practice is now focused solely on helping patients with excess weight and weight related medical problems who want to lose weight and get healthier. Dr. Duncan loves working with patients to improve their health and quality of life using evidence based approaches and FDA approved medications when needed. She uses individualized treatment plans to improve nutrition, behaviors and physical activity. She understands the complexities of losing weight and how to manage it long term.

Dr. Duncan was born in Edmonton, Alberta Canada and moved to Scottsdale as a child. She attended the University of Arizona for her undergraduate education, and then continued there for medical school. She went on to complete her residency in internal medicine at Banner University Medical Center in Phoenix, and then practiced outpatient internal medicine for a few years. During that time, she became board certified by the American Board of Obesity Medicine and then completed a coveted one year fellowship in Obesity and Metabolism at the University of Texas in Houston. She has focused her practice completely on obesity medicine since completing her fellowship in 2017. She has been actively involved in national and local organizations, including the Obesity Medicine Association and the Arizona Obesity Organization where she served on the board of directors.

She is married, has two daughters, a big dog, and enjoys spending time with her family and friends, running, doing Pilates, and reading.