William J. Kowalski, DMD, MS LLC

Fenton, MO · Dentist

Rating
4.0/5
★★★★☆ 4.0
Reviews
20
Rank in Fenton
#16
of 62 doctors
City Percentile
41%
rating percentile
Address
William J. Kowalski, DMD, MS LLC, 1568 Smizer Station Rd, Fenton, MO 63026
Phone
(636) 225-2330
Website
www.endostl.com

William J. Kowalski, DMD, MS LLC is a doctor located in Fenton, MO. It is one of 62 doctors listed in Fenton. Its 4.0-star rating is slightly below the Fenton city average of 4.3 stars. It ranks #16 of 62 doctors in Fenton. There are 10 photos associated with this location.

About William J. Kowalski, DMD, MS LLC

Our caring endodontist, Dr. William J Kowalski DMD MS LLC, and his dental team make it their mission to provide the highest standard of endodontics possible. We strive to exceed your expectations and ensure your comfort. We take the time necessary to... More

Customer Reviews

★★★★★ 5.0 Joseph Owens · Jan 2026

I went in for a root canal procedure that had to be done on a tooth that was in an immense amount of pain on a tooth that already had a crown . I had a very good experience and good conversation with Dr Kowalski. I am going back for a second appointment for a permanent filling. The inside of the office is very nice as well , I will add.

★☆☆☆☆ 1.0 Lauri Schroeder · Dec 2025

I'm assuming even for an endodontist I have a not so idea situation. Regardless I will never recommend this office. I will be kind and not give specifics, however if you'd like to send me a direct message I'd gladly answer any questions you may have as to why. I called my dentist after my consult at this office and they never even refer this office, it just happened to be at the top of my very short list to be in network for my dental insurance. Lesson learned.

★★★★★ 5.0 Annie P · Apr 2025

I was super nervous to get a root canal but Dr. Kowalski and his assistant Caroline made it easy and painless! I even went back to work after the dental work was done. I had to get 2 treatments because of an infection, and the office had my prescription for antibiotics and steroids in quickly. I would definitely recommend this endodontist!

★★★★★ 5.0 Kimberly Phelan · Mar 2024

I was recently referred to Dr Kowalski for a root canal. I was a tad anxious about the procedure I needed but he made a stressful situation a very easy process. Him and his staff were all very friendly and accommodating and got me in quickly. The root canal itself was pain free during and after which I did not expect. I would recommend this office to anyone (and already have a few times). I will also continue to use them for any future needs.

★★★★★ 5.0 ndrebels · Nov 2017

Dr. Kowalski and his staff are so amazing!! I was terrified of having a root canal, and he made it so easy and PAIN FREE!! I was 100% impressed with his knowledge, compassion, and he is hysterical to listen to while he is working on your teeth. He made a scary procedure quick and painless, I will recommend him to anybody!!

Accessibility & Amenities

✓ Wheelchair Accessible Entrance ✓ Wheelchair Accessible Parking Lot ✓ Wheelchair Accessible Restroom

Services

Dentist

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This listing is informational. Contact the business directly to verify credentials, services, and availability.