Zachary R. Barker, DO See this provider's profile on Healthgrades Specialties: Family Medicine, Internal Medicine, Primary Care Ferguson Medical Group320 North LincolnEast Prairie, MO 63845 [map]573-649-3026 Accepting New Patients! Board Certification American Board of Family Medicine Medical Education 2019 - Lincoln Memorial University, Harrogate, TN Residency 2022 - University of Missouri, Columbia, MO