N
National OrthodonticRegistry
AboutFor Practices
Register Your Practice
N
National OrthodonticRegistry

The nationwide directory for finding verified orthodontic care.4,113+ practices across all 50 states.

Popular Cities

  • Los Angeles, CA
  • New York City, NY
  • Houston, TX
  • Chicago, IL
  • Phoenix, AZ
  • Miami, FL
  • Dallas, TX
  • Atlanta, GA

Browse by State

  • California
  • Texas
  • Florida
  • New York
  • North Carolina
  • Ohio
  • Arizona
  • Virginia
  • All states →

Discover

  • Find an Orthodontist
  • Invisalign
  • Cost Guides
  • About Us
  • Contact

For Practices

  • Claim Your Practice
  • Premium Listing
  • Practice Login

© 2026 National Orthodontic Registry. All rights reserved.

PrivacyTermsllms.txt
Book OnlineCall

Tap to connect directly with this practice

  1. Home
  2. /North Dakota
  3. /Fargo Orthodontists
  4. /Tronsgard and Sullivan, DDS, PC

Tronsgard and Sullivan, DDS, PC

1231 27th St S, Fargo, ND 58103
4.9(430 reviews)
Call Now(701) 232-6983Book OnlineWebsiteDirections
Tronsgard and Sullivan, DDS, PC

About Tronsgard and Sullivan, DDS, PC

Tronsgard & Sullivan, DDS is a general and cosmetic dental practice in Fargo, ND offering routine cleanings, exams, restorative treatments, and cosmetic procedures.

The practice uses state-of-the-art technology including digital X-rays and Invisalign to restore and enhance smiles.

Services Offered

Invisalign

Meet the Orthodontists

D

Dr. Daren T. Sullivan, DDS

Lead OrthodontistAccepting New Patients
D

Dr. Coulton R. Dangerfield

Accepting New Patients

Insurance Accepted

Tronsgard and Sullivan, DDS, PC accepts 1 insurance plan. Contact the office to verify your specific coverage.

Aetna

Accepts most traditional insurance plans. Does not participate in Health Management Organizations (HMOs). Will file insurance claims for patients.

Patient Reviews

4.9(430 reviews)
B
Brandee Bossingham
a month ago
“

Had a great first time experience at their clinic. Dr Dangerfield is amazing. He is friendly, gentle in your mouth and thorough with his exam. He caught things on the X-ray that I definitely feel other dentist have missed or some of my teeth might not be in their current situation if they had been spotted sooner. I'm grateful to have found a dentist I'm happy with.

L
Lorretta Graumann
2 weeks ago
“

I have been getting dental care for a number of years at Tronsgard & Sullivan. My most recent work has been by Dr Coulton Dangerfield. He is very professional and knowledgeable, and listens well. The dental techs and front-desk staff are also top-notch! I highly recommend this office for dental care.

M
Maren Schuman (MarenS)
3 weeks ago
“

Excellent and friendly service. They fit me in to their busy schedule and Dr. Sullivan addressed my concerns clearly and in detail. This dental practice treats their patients with care and compassion.

k
kevin miller
a month ago
“

I had an incident on a Sunday evening and chipped a front tooth. I called Monday morning to see if l could schedule an appointment. After explaining my situation l was able to get in later that day. WOW! l am very happy with the work done. Thank you Dr. Dangerfield.

G
Gregg gunderson
a month ago
“

Doctor Sullivan was very good at explaining the procedure he was to perform on my teeth, what to expect, the cost, and the outcome, what things to do, or not do after treatment. very Professional service and did a great job exactly as explained to be performed. Also done in a very timely manner, with very little wait time. Also the nurses receptionists etc... were as well very helpful and right on point. I give them all 5 stars. (but I still don't like going to the dentist, ughh, but must be done.

See all 430 reviews on Google

Frequently Asked Questions

Tronsgard and Sullivan, DDS, PC offers the following orthodontic treatments: Invisalign. Contact the office to discuss which option is right for you.
Tronsgard and Sullivan, DDS, PC accepts several insurance plans including Aetna. Contact the office to verify your specific plan is accepted.
Contact Tronsgard and Sullivan, DDS, PC to learn about consultation options and fees.
Tronsgard and Sullivan, DDS, PC is currently welcoming new patients in Fargo, ND. Call (701) 232-6983 or book online to schedule your first visit.
Tronsgard and Sullivan, DDS, PC is located at 1231 27th St S, Fargo, ND 58103. Get directions: https://maps.google.com/?cid=308986666982496084&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA
Tronsgard and Sullivan, DDS, PC office hours: Mon 7:00 AM–4:00 PM, Tue 7:00 AM–4:00 PM, Wed 7:00 AM–4:00 PM, Thu 7:00 AM–4:00 PM, Fri 8:00 AM–12:00 PM, Sat Closed–Closed, Sun Closed–Closed.
Yes, Tronsgard and Sullivan, DDS, PC offers flexible payment plans to make orthodontic treatment affordable. Contact the office to discuss financing options.
Tronsgard and Sullivan, DDS, PC is staffed by Dr. Daren T. Sullivan, Dr. Coulton R. Dangerfield.
Tronsgard and Sullivan, DDS, PC has a 4.9 out of 5 star rating based on 430 patient reviews on Google.

Research with AI

Ask an AI assistant about Tronsgard and Sullivan, DDS, PC in Fargo

Ask ChatGPT·Ask Perplexity·Ask Claude

Contact Information

1231 27th St S
Fargo, ND 58103
Get Directions
(701) 232-6983
tronsgardsullivan.com/
office@tronsgardsullivan.com
Open in Google Maps

Practice Info

Payment Plans Available
Evening Hours
Online Booking Available

Accessibility & Parking

Wheelchair Accessible Entrance
Wheelchair Accessible Parking
Wheelchair Accessible Restroom

Payment Methods

Cash
Credit Cards
Debit Cards
Contactless / NFC
CareCredit

Office Hours

Mon7:00 AM – 4:00 PM
Tue7:00 AM – 4:00 PM
Wed7:00 AM – 4:00 PM
Thu7:00 AM – 4:00 PM
Fri8:00 AM – 12:00 PM
SatClosed
SunClosed

Social Profiles

Is this your practice?

Claim your listing to update info, add photos, and respond to reviews.

Are you the owner? Claim this listing
Back to Fargo Orthodontists

More Orthodontists Near Fargo

Other orthodontic and dental practices near Tronsgard and Sullivan, DDS, PC

View all →
Gruchalla Dentistry0 mi

Gruchalla Dentistry

5.0(240)

1231 27th St S Ste A, Fargo, Fargo

View Profile →
Corwin Family Dentistry0.2 mi

Corwin Family Dentistry

4.9(303)

827 28th St S STE A, Fargo, Fargo

View Profile →
Friendly Smiles Cosmetic Dentistry0.3 mi

Friendly Smiles Cosmetic Dentistry

3.3(53)

2701 9th Ave S f, Fargo, Fargo

View Profile →