William J. Kowalski, DMD, MS LLC

4.0
20 reviews

About

Dentist
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 properly treat each and every patient, and we are committed to providing high-quality, individual care. Our excellent service is further enhanced by high-tech features, such as paperless charting, digital X-rays, and a dental microscope for enhanced visibility. You can count on us to provide the high-quality endodontics in Fenton, Missouri, that you need!

Location

William J. Kowalski, DMD, MS LLC
1568 Smizer Station Road, Fenton, MO
63026, United States

Hours

Reviews

4.0
20 reviews
5 stars
15
4 stars
0
3 stars
0
2 stars
0
1 star
5
  • LS
    Lauri Schroeder
    Dec 29, 2025
    1.0
    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.
  • AP
    Annie P
    Apr 28, 2025
    5.0
    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!
  • PC
    Pam Copeland
    Jun 23, 2022
    5.0
    I can’t say enough of Dr. Kowalski and staff. I felt well cared for and have total trust in their office. Highly recommend them!
  • SW
    Sarah Walton
    Sep 29, 2016
    5.0
    You might have to wait for Dr. Kowalski for a bit, but he's well worth it. He has completed 3 root canals on me and I'm so relaxed I almost fall a sleep. He's the best, so be patient!
  • KY
    Kate Yancey
    Feb 18, 2014
    5.0
    I have been to many dentists over my lifetime. Dr. Kowalski is miles above them all. His expertise has saved me thousands of dollars. In my case he had to clean up a botched procedure done by another dentist. I can't say enough good things about Dr. Kowalski. He is truly the best!

Frequently Asked Questions About William J. Kowalski, DMD, MS LLC

What services does William J. Kowalski, DMD, MS LLC provide?

They offer high-quality endodontic treatments using advanced technology such as digital X-rays and dental microscopes to ensure patient comfort and care.

Where is William J. Kowalski, DMD, MS LLC located?

The practice is located at 1568 Smizer Station Road, Fenton, MO 63026, USA.