What patients are saying
Overall rating
5.00
Average wait time
4.95
Bedside manner
5.00
“It is very pleasant to arrive at a location where you are greeted warmly and made to feel comfortable from start to finish. The entire process was efficient and easy to navigate, thanks to the attentive staff. Thank you, Confident Smiles, for your exceptional service. ”
Mario B.February 24, 2026
“This was my first visit, but the staff was very friendly, and extremely helpful. The Dr showed me the x-rays, and explained exactly what needed to be done. I was very happy with how my appointment went.”
Michele S.January 14, 2026
About Dr. Ryan Brennan
**Not a Medicaid provider**
Dr. Ryan Brennan’s mission is to provide comprehensive dental solutions to all his patients, in a pleasant, reassuring and comfortable environment.
He graduated from UMKC School of Dentistry, in Kansas City Missouri. He is a member of the American Dental Association as well as the Missouri Dental Association. He continually seeks training and professional development to remain knowledgeable about new dental practices and the latest technological advancements in dentistry such as implants, Invisalign, and Botox treatment.
In his free time, Dr. Brennan enjoys traveling, the outdoors, virtually all sporting events and spending time with his family, including his lovely wife Debbie, and two children Adam and Lilly. He recently took a trip to Italy as a belated honeymoon, where they took an Amalfi Coast cooking class and even took a boat to Capri for the day.
If you want to impress this foodie, it is very simple “I love a good steak house and Caesar Salad!”
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Delta Dental
Guardian
Metlife
UnitedHealthcare
Office location
Education and background
Practice names
Education and training
- Dental School - UMKC School of Dentistry, Doctor of Dental Surgery
Professional memberships
- American Dental Association
- Missouri Dental Association
Languages spoken
- English
Provider's gender
Male
NPI number
1942668033
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
5.00
Wait time
4.95
Bedside manner
5.00
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
21 reviews
Most relevant
I felt very comfortable and relaxed. From the front desk to the doctor and assistants, everyone was helpful and informative.
Less than 6 months agoAD
Painless, fast,comfortable conditions good people,once again thank you all
January 29, 2026steven T.Verified patient
Everyone involved made for a great experience. Highly recommend!
November 16, 2025James L.Verified patient
Absolutely 1st class and was very pleased with my dental needs.
Less than 6 months agoKC
I had a great experience with Dr.Brennan! He is very thorough!
Less than 6 months agoHZ
It is very pleasant to arrive at a location where you are greeted warmly and made to feel comfortable from start to finish. The entire process was efficient and easy to navigate, thanks to the attentive staff. Thank you, Confident Smiles, for your exceptional service.
February 24, 2026Mario B.Verified patient
Beautiful office! Very warm and efficient.
January 25, 2026Initials hidden
This was my first visit, but the staff was very friendly, and extremely helpful. The Dr showed me the x-rays, and explained exactly what needed to be done. I was very happy with how my appointment went.
January 14, 2026Michele S.Verified patient
I am going back to finish out my beautiful smile. Great energy in office and his staff is amazing. He told me what was best, not what I wanted to hear. One of the best decision I made coming here. Thank all you guys.
January 7, 2026Shanetta J.Verified patient
The friendly atmosphere was welcoming. Dr. Brennan and the staff communicated very well and did not seem rushed. My questions were answered clearly. I would not hesitate to recommend Dr. Brennan and the staff. Thank you.
November 20, 2025Barbara F.Verified patient
Very pt and understanding
Less than 6 months agoCD
Very professional & knowledgeable
Less than 6 months agoVW
Office was very nice. front desk friendly. Was seated right away & dental assistant seemed to really listen to me. doctor was friendly. Really explained everything to me.
Less than 6 months agoLJ
Highly recommend Confident Smiles and Implants. Dr. Brennan and the staff are very welcoming and kind. Dr. Brennan is very knowledgeable and I can tell he truly cares about my oral health and overall wellbeing.
Less than 6 months agoMJ
Dr. Brennan fixed my broken tooth after explaining what needed to be done. I highly recommend Dr. Brennan for all dental needs.
Less than 6 months agoJH
February 18, 2026Michael N.Verified patient
February 18, 2026Christiani W.Verified patient
Less than 3 months agoInitials hidden
Less than 3 months agoInitials hidden
January 19, 2026Mary J.Verified patient
January 17, 2026Jenna D.Verified patient
How soon can I make an appointment with Dr. Ryan Brennan?
Generally, Dr. Ryan Brennan has appointments available on Zocdoc within 1 week. You can see Dr. Brennan's earliest availability on Zocdoc and make an appointment online.
Is Dr. Ryan Brennan accepting new patients?
Dr. Ryan Brennan generally accepts new patients on Zocdoc. You can see Dr. Brennan's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Ryan Brennan accept my insurance?
Choose your insurance plan to verify if Dr. Brennan is in-network.
Can I make an appointment with Dr. Ryan Brennan online?
Yes, you can make an appointment online with Dr. Brennan using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Ryan Brennan work with?
Dr. Ryan Brennan works with Confident Smiles & Implants.
Where is Dr. Ryan Brennan's office located?
Dr. Ryan Brennan's office is located at 4122 Keaton Crossing Blvd, O'Fallon, MO 63368.
What are common reasons for patients to see Dr. Ryan Brennan?
Dr. Ryan Brennan frequently sees patients for Bridge, Dental Cleaning, Dental Consultation, Pediatric Dentist Consultation, and Root Canal. You can see other visit reasons for Dr. Ryan Brennan on their profile.
What languages does Dr. Ryan Brennan speak?
Dr. Ryan Brennan speaks English.
How do patients rate Dr. Ryan Brennan in reviews?
21 patients have reviewed Dr. Ryan Brennan. The overall rating for this doctor is 5/5. They have a 5/5 rating for bedside manner and a 4.95/5 rating for wait time. You can read individual reviews and ratings on their profile.