Walmart Care Clinic is a retail clinic inside of Walmart in Reno but unfortunately we don't currently know the hours in which the clinic is open. They are located at 4855 Kietzke Ln. Of course it's always best to call in advance to confirm hours of operation before walking in.
Retail clinics offer a wide range of services overlapping considerably with those of a traditional walk-in urgent care center. That said, they are usually staffed by a Nurse Practitioner (NP) rather than a medical doctor and generally do not have an on-site x-ray or lab services, which will prevent them from seeing patients with more advanced injuries and illnesses.