Nicholas P. Knighton, DO

Nicholas Knighton, DO, is an internal medicine physician in St. George, Utah, who is passionate about helping patients achieve lasting health through lifestyle-focused care. A Cache Valley native, Dr. Knighton brings a practical, empowering approach to medicine that emphasizes the body’s natural ability not only to heal but also to thrive.

Dr. Knighton believes many illnesses stem from poor diet and lack of exercise—and that improving these fundamentals can often lead to significant improvements in overall health. He encourages focusing on “putting the good stuff in and getting the bad stuff out,” helping patients make meaningful, sustainable changes that support long-term wellness.

While he appreciates the satisfaction of quickly resolving a medical issue, Dr. Knighton understands that most health challenges don’t have simple, immediate solutions. Instead, he emphasizes the importance of consistency—across nutrition, physical activity, and other healthy habits. He works closely with his patients to build realistic, lasting routines that yield steady progress over time.

Dr. Knighton is committed to guiding patients with encouragement, education, and practical tools, helping them remove barriers to better health and supporting their role as active participants in their own care.

Outside of work, Dr. Knighton enjoys spending time outdoors, with interests that include skiing, hiking, and camping. These days, much of his free time is happily spent attending his children’s Little League football and soccer games, combining his love of family and the outdoors.