William Mark Barnett

Dr. William Barnett is a family medicine physician who completed his medical education at the University of Missouri Columbia School of Medicine. He continued his training with a residency at the University of Missouri Hospital and Clinics, building a strong foundation in comprehensive primary care. With 15 years of clinical experience, Dr. Barnett has developed expertise in treating patients of all ages and managing a wide range of health conditions. He is fluent in both English and Spanish, allowing him to serve diverse communities throughout Missouri.

Dr. Barnett practices at Mercy Clinic Family Medicine in Rolla, Missouri, and maintains hospital privileges at Phelps Health Hospital. His clinical focus includes treating common respiratory conditions such as throat infections and sinus problems. He also coordinates therapy services and provides COVID-19 testing for his patients. Patients consistently rate their experience with Dr. Barnett highly, giving him an average rating of 5.0 …stars for his compassionate care and thorough approach to family medicine.