Concentra is an urgent care center in Ontario, CA located at 1101 S Milliken Ave, Suite C. The hours of operation for this clinic are not known, however most walk-in clinics are open daily and for extended hours. Concentra is part of the larger Concentra network of urgent care clinics with a total of 331 locations, 2 of which are within 20 miles of Ontario, in cities including Rancho Cucamonga and Placentia.

As an urgent care center, Concentra provides non-emergent medical care most typically referred to as urgent care services. This category of medicine includes the treatment of allergies, asthma, broken bones and sprains, burns, cold and flu symptoms, ear, sinus and respiratory infections, insect and animal bites, stomach viruses, skin rashes and most other non-life threatening injuries, illnesses and conditions. While this urgent care does offer assistance with immediate health care needs, if you are suffering from a true medical emergency, go to the emergency room in Ontario, CA or call 911 immediately.