3955 Bayless Avenue Suite 100
Saint Louis, MO 63125

Monday – Wednesday 8 AM – 5 PM
Thursday – 8 AM – 2 PM
Friday – Closed for Clinical Research/Teaching
Saturday – Closed for Clinical Research/Teaching
Sunday – Closed

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After Hours

Don’t panic! We’re only a phone call away!

Our after-hours telephone number for Dr. Keller is (314) 842-4805.

If you have a dental emergency, please call our after-hours telephone number and follow the instructions on our out-going message.

You may also reach Dr. Keller via email at

Please note that medications will only be prescribed for patients who have recently been seen in our office.

If you have a medical emergency, please call 911 or get to the nearest emergency room.