3 St. Elizabeth's Blvd., Suite 4000, OFallon, IL 62269

Accepting New Patients! 


Monday - Friday | 8:00am to 4:30pm




Family Medicine

Mechelle Elosiebo, MD
Marjorie Guthrie, MD

Behavioral Health

Marla Nelson, MA, LCPC

Resident Physicians

Gregory Daum, DO
Jeffrey Schenck, DO
Stephanie Simpson, DO
Mina Cunningham, MD
Molly Henson, MD
Kandace LaMonica, MD
Benjamin Nicotera, MD
Chienyem Nweke, MD
Karan Rai, MD
Robinder Sahi, MD
Mehwish Siddiqui, MD
Hina Usman, MD
Brent Ansteht, MD
Benjamin Beggs, MD
Jarrett Dawson, MD
Vincent Duenas, MD
Graham Foster, MD
Stanley Noll, MD

After hours assistance is available by calling 618.398.9445.
If you have an emergency, call 9-1-1.

About this Location 

Free valet parking is available.

At our new O'Fallon location, we provide Family Medicine, Behavioral Health, as well as OB and Pediatric services to patients in partnership with St. Louis University Family Medicine Residency Program and St. Elizabeth's Hospital. Our office is accessible through the St. Elizabeth's Health Center entrance.

Our partnership with St. Elizabeth’s Hospital, St. Louis University School of Medicine and Scott Air Force Base enables us to serve and provide clinical care for patients of all ages, including the military community.

We take pride in our very diverse and unique clinic, as well as our full spectrum of medical care. As a staple of the community we serve, our clinic provides a full spectrum of medical care. When patients walk through our doors, they can rest assured that they have a team of healthcare advocates on their side.