Mercy Urgent Care - O'Fallon

Urgent Care or Convenient Care
300 Winding Woods Drive, Suite 100
O Fallon, MO 63366

Phone: (636) 379-4329
Fax: (636) 379-4328
Open Daily 8 a.m. - 6 p.m.
Services are provided by Mercy Hospital St. Louis Learn more »

Accidents and illnesses can happen anytime – even when your regular doctor may not be available. With Mercy Urgent Care in O'Fallon, MO, you can walk in without an appointment and get the medical attention you need at a lower cost and with a shorter waiting time than in your local emergency room.

Use urgent care for: 

What Does Urgent Care Treat?

Difference between Urgent Care and ER

Remember: Urgent Care is not a substitute for the ER. If your symptoms are life-threatening, call 911 immediately.

Proud to Serve Veterans

Mercy Urgent Care is now part of the Veterans Affairs (VA) Community Care Network. Veterans can get quality urgent care without prior approval from the VA. Learn more.