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Dentists in O'fallon, MO

43 dentists listed in O'fallon, Missouri. 43 with a phone number and 42 with a website.

O'fallon accounts for 1.6% of the dentists listed in Missouri.

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Quick answer

O'fallon, MO has 43 dentists listed on USA Business Search. 43 list a phone number and 42 list a website. The most listings are in ZIP codes 63368, 63366.

Updated October 2026
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How to choose a dentist in O'fallon

  • Ask whether they are in network with your insurance and what a new-patient visit costs.
  • Ask about emergency appointments before you need one.
  • For cosmetic work, ask to see before-and-after photos of their own patients.

Check the business: confirm a company's registration with the state in our Missouri business lookup guide, and licensed trades in the contractor license lookup guide.

Common questions

How many dentists are listed in O'fallon, Missouri?

USA Business Search shows 43 dentists in O'fallon. 43 list a phone number and 42 list a website.

Which ZIP codes do these listings cover?

They include ZIP codes 63368, 63366.

How do I choose a dentist in O'fallon?

Ask whether they are in network with your insurance and what a new-patient visit costs. Ask about emergency appointments before you need one. For cosmetic work, ask to see before-and-after photos of their own patients. Check the license or registration through the Missouri business lookup guide.

How do I add or fix a listing?

Listings are free. Use Add your business, or the Claim or fix link on any listing.

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