It’s Not Just the Sweets: The Three-Legged Stool of Diabetes | On Call with the Prairie Doc® | February 18, 2021. Prairie Doc® host Deb Johnston, MD, is joined by guest physicians Richard Crawford, MD, Avera Medical Group Endocrinology & Diabetes Sioux Falls, and John Palmer, DO, Monument Health Rapid City Clinic, to answer viewer questions about diabetes and some of the latest treatment options.