Medical One Clinic Address 29 NW 1st Lane Lamar, MO 64759 location Get Directions Phone: 417-681-5266 Hours 7:30 a.m.-6 p.m., Monday through Thursday7:30 a.m.-4:30 p.m., FridayClosed daily 12 p.m.-1 p.m. About The Medical One Clinic at Cox Barton County Hospital has a team of health care professionals to care for you and your entire family. Our services include management of chronic health conditions, women's health care, diabetic care, orthopedic services, preventive care and more. Visitor Restrictions Due To COVID-19Please note there may be visitor restrictions at some of our locations due to COVID-19. Please see our latest COVID-19 updates to get up-to-date information on current restrictions.