We Keep O'Fallon Smiling

3009 Hwy K
O'Fallon, MO 63368

Book Your Dentist Appointment

Or call 636-379-7552

Office Hours

Mon    8:00 AM - 5:00 PM
Tues    8:00 AM - 5:00 PM
Wed    9:00 AM - 6:00 PM
Thurs  7:00 AM - 4:00 PM
Fri        8:00 AM - 1:00 PM
Sat       Closed
Sun      Closed


**Fridays by appointment only.

Google map of O'Fallon Modern Dentistry

Office Information

at Highway K and Route N, in front of Schnucks; next to Firestone


O'Fallon Modern Dentistry

3009 Hwy K

O'Fallon, MO 63368

P: 636-379-7552

F: 636-379-7553

Get Directions


We accept and honor most dental insurance plans.

The following are just a few of the dental insurance carriers we're providers for: 

Halie Gulley
Halie Gulley, DDS
O'Fallon Modern Dentistry
"You can expect to be treated like family. I will listen to your concerns to uniquely develop a treatment plan that fulfills your wants and needs. I will always do my best to make you feel safe and appreciated."

We pride ourselves on our service.

We use advanced proven technology to keep your smile looking the best! Modern dental technology like Digital X-Rays and CEREC® CAD/CAM single-visit crowns allow care that's faster, less invasive and more efficient than ever before.

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What patients are saying

Welcome to O'Fallon Modern Dentistry

At O'Fallon Modern Dentistry, we pride ourselves on providing modern dentistry that gives you the most choices in the O'Fallon, St. Peters, and Lake St. Louis surrounding areas. With digital X-rays, digital record-keeping, an intraoral camera, CEREC single-visit crowns, Invisalign, and more, we strive to be efficient and accurate with your dental care. We offer a complete range of comprehensive dental services, including cleanings, exams, whitening, crowns, dental emergencies, braces, and dentures. We provide teledentistry for you to virtually connect with our team of dentists from the comfort of your home. We accept many insurance plans and can help you with access to flexible payment options. Schedule your next in-office visit with using our online scheduler or by calling us directly at (636) 379-7552.