Mercy Clinic Primary Care - O'Fallon Winding Woods

300 Winding Woods Drive, Suite 214
O Fallon, MO 63366


Phone: (636) 614-3280
Fax: (636) 272-3680
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Primary Care in O'Fallon

You don’t often think about your doctor until you get sick. The primary care doctors at Mercy want to change that. Being well between visits is just as important. So Mercy Clinic Primary Care in O'Fallon, MO focuses on education and answering your health care questions and concerns, enabling you to take an active part in your health care. And our team is also linked to numerous medical specialists and a full range of diagnostic laboratory and imaging services when you need them.

Our services include:

  • Treatment of minor illnesses and injuries, including strains, sprains and fractures
  • Flu shots and other immunizations
  • General medical evaluations and wellness exams
  • Sports and occupational physicals

Mercy internal medicine doctors are connected by our advanced electronic health record system, so your most up-to-date medical information is instantly available to the caregivers at each point of medical care.  In addition, you can take advantage of MyMercy, an app to view test results, make appointments and send secure messages to your doctor and more - anytime and anywhere.

Meet Our Virtual Assistant

To save you time when calling our clinic, you’ll be greeted by Toni, Mercy’s virtual assistant. Toni can help right away if you’d like to book, change or cancel a visit, or request medication refills from Mercy Pharmacies. Toni is also available through the chat feature here on our website.

If you prefer self-service, log in to your MyMercy  account to make or change appointments, request refills and much more.  

Meet Our Team