Walk-In Clinic Springfield: Chesterfield Address 3805 S. Kansas Expressway, Suite B Springfield, MO 65807 location Get Directions Phone: 417-269-0269 Hours Monday – Friday, 8 a.m.–8 p.m.Saturday, 9 a.m.–5 p.m. No appointments needed. Holiday hours may vary. Save My SpotSpend less time waiting in line when you're feeling under the weather. With Save My Spot, you can fill out a simple form and wait from the comfort of your home. Save your spot now.