As a precaution to prevent the spread of COVID-19, our office will be closed until further notice. If you are experiencing a dental emergency, please call (636) 465-9393.

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Your Friendly Family Dentist

Williamson Dental

Serving F

We’re Here for You

Proactive Dental Care For the Whole Family

With two convenient locations in Festus and Columbia and a focus on prevention, we strive to always put our patients’ needs first. We educate all of our patients about their dental needs, empowering them to maintain lifelong oral health. At Williamson Dental, we are committed to always learning and improving our practice through continuing education courses and open communication with our patients. If you’re looking for a dentist in Festus, we hope to see you at Williamson Dental. We can’t wait to get you started on your dental wellness journey!

a dental hygienist holding a mold of teetha field of flowers and tall grassa woman receptionist greeting a patienttwo dental hygienist hugging and smiling outsidea woman holding giant toothbrush and floss signthe columbia doctors standing outside smilinga skyline view of the city of St. Louis, Missouri

Our Patients Love Us!

Read reviews and Testimonials

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Amanda Sander

Dr. Williamson was so good with my daughter! She had to have a tooth pulled and he kept her completely calm the entire time. The "call" to the tooth fairy at the end was icing on top. Great practice, great people!

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Liz Phi

I hadn't been to the dentist in a long time because I was so afraid of being judged. I finally went in to Williamson Dental and I am so glad I did! They are amazing and you don't have to wait months to get an appointment with them! I highly recommend Williamson Dental to anybody!

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Ruth Balay

I had an emergency and they got me in right away. Dr Williams and staff was very helpful,  friendly and care about their patients. I will definitely be back

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I Need a Checkup

Whether it’s been six months or six years, come in for a cleaning and exam to keep your teeth bright, healthy, and free of any potential dental issues.

Preventive CareLearn More
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Can I Bring My Kids?

At Williamson Dental, we provide compassionate dentistry for patients of all ages, so bring the whole family!

Family DentistryLearn More
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I’m Missing a Tooth

If you’re looking for a healthy, permanent, natural-looking tooth replacement, a dental implant may be right for you. Come in for a consultation today!

Dental ImplantsLearn More


Dr. Williamson

Dr. Williamson loves dentistry because it allows him to work with his hands while combining his love of science and art. He enjoys making a real difference in his patients’ lives and is grateful to own his own practices as it allows him flexibility to travel and spend quality time with his family. When Dr. Raney was ready to pass the torch and take a step back, Dr. Williamson was honored to fill his mentor’s shoes.

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Dr. haarmann

Dr. Haarmann attended St. Louis University and Southern Illinois University School of Dental Medicine. He has now been practicing dentistry for over six years, and is proud to treat patients with respect and provide the highest quality of care possible. Dr. Haarmann feels rewarded when he is able to make a positive impact on his patient’s lives by helping them achieve their oral health goals.


Dr. Raney

Dr. Raney was born in Effingham, Illinois and has lived and worked in Columbia for the last 35 years. He has been practicing dentistry since he graduated from SIU School of Dental Medicine in 1984. He takes great pride in his commitment to excellence in his work and wants to be known for taking care of his patients in a way that he would want to be treated.

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Why We Love Our Doctors

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