Jefferson Chamber of Commerce MHM Urgent Care River Ridge Share: Medical / SurgeryPhysicians / Surgeons MHM Urgent Care River Ridge Visit Website 9605 Jefferson Hwy Suite B River Ridge, LA 70123 504-739-9494 MHM Urgent Care River Ridge About Map About Walk-in care for injury and illness. The first Joint Commission Accredited Urgent Care Centers in Louisiana. On-site Lab and X-Ray. No appointments needed. Open 7 days a week, including late evenin What's Nearby? Distance: 5 10 15 20 25 50 mi.