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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.
1231 27th St S, Fargo, ND 58103
4.9(430 reviews)
About Tronsgard and Sullivan, DDS, PC
Dr. Sullivan and Dr. Dangerfield lay out treatment options without pushing added procedures, drawing families who bring several kids through the office over the years.
Tronsgard and Sullivan is a general dental practice that also offers Invisalign and retainer services alongside routine dentistry. Many reviews come from families bringing multiple kids through the office over time, and young children in particular are described as put at ease during visits. Reviewers frequently mention that treatment options are presented without pressure toward added procedures, and that Dr. Sullivan and Dr. Dangerfield explain diagnoses, treatment plans, and costs before work begins.
Summary of 201 patient reviews, November 2020–September 2026, updated September 2026
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.
Treatments offered
InvisalignRetainers
Who They Treat
Tronsgard and Sullivan, DDS, PC provides orthodontic treatment for the following age groups:
Children
Ages 6–11
Orthodontists at this office
provider
headshot
headshot
Dr. Daren T. Sullivan, DDS
NPI verified · no bio or photo on file
Lead OrthodontistNPI VERIFIEDAccepting New Patients
provider
headshot
headshot
Dr. Coulton R. Dangerfield
NPI verified · no bio or photo on file
NPI VERIFIEDAccepting New Patients
Insurance accepted
1 plan listedAetna
Accepts most traditional insurance plans. Does not participate in Health Management Organizations (HMOs). Will file insurance claims for patients.
What patients say
Latest review 8 weeks ago
What patients praise
- Families with several children in treatment describe returning to this office year after year.
- Reviews describe a low-pressure approach, with treatment options presented rather than pushed.
- Dr. Sullivan and Dr. Dangerfield are described as explaining diagnoses, treatment plans, and costs thoroughly before starting care.
Things to know
- A few reviews mention billing frustrations, including one describing the practice discontinuing care after a patient lost insurance and could not pay.
- A couple of reviews describe feeling pressured toward a recommended treatment, including one mentioning a suggested tooth extraction for a child.
Who it suits
- Families with several kids in treatment
- Young children
- Anxious or nervous patients
Doctors patients mention
- Dr. Daren T. Sullivan · 31 reviews
- Dr. Coulton R. Dangerfield · 18 reviews
Orthodontic care in reviews
Few reviews discuss orthodontic treatment specifically; the feedback above reflects general dental visits.
- Last 90 days
- 26 reviews
- averaging 5.0★
- Last 12 months
- 94 reviews
- averaging 4.8★
- Owner replies
- 0% of reviews
15
Oct 2023Sep 2026
| Oct 2023 | 9 |
|---|---|
| Nov 2023 | 10 |
| Dec 2023 | 2 |
| Jan 2024 | 8 |
| Feb 2024 | 5 |
| Mar 2024 | 6 |
| Apr 2024 | 7 |
| May 2024 | 8 |
| Jun 2024 | 7 |
| Jul 2024 | 6 |
| Aug 2024 | 7 |
| Sep 2024 | 5 |
| Oct 2024 | 6 |
| Nov 2024 | 5 |
| Dec 2024 | 5 |
| Jan 2025 | 2 |
| Feb 2025 | 2 |
| Mar 2025 | 4 |
| Apr 2025 | 11 |
| May 2025 | 7 |
| Jun 2025 | 9 |
| Jul 2025 | 4 |
| Aug 2025 | 6 |
| Sep 2025 | 7 |
| Oct 2025 | 4 |
| Nov 2025 | 9 |
| Dec 2025 | 6 |
| Jan 2026 | 9 |
| Feb 2026 | 4 |
| Mar 2026 | 6 |
| Apr 2026 | 8 |
| May 2026 | 15 |
| Jun 2026 | 6 |
| Jul 2026 | 11 |
| Aug 2026 | 6 |
| Sep 2026 | 6 |
- 5★439
- 4★15
- 3★0
- 2★0
- 1★5
- 20105.0
- 20135.0
- 20145.0
- 20155.0
- 20175.0
- 20185.0
- 20195.0
- 20204.9
- 20214.9
- 20224.8
- 20235.0
- 20245.0
- 20254.8
- 20264.9
1★5★
- Early (phase 1) treatment5
PraiseCriticism
- The dentist59 / 1
- Friendly staff59
- Clear explanations34
- Gentle, comfortable care28
- Scheduling & wait times18
- Great with kids12 / 1
- Cost, insurance & financing10 / 2
- Responsiveness10
| Theme | Praise | Criticism |
|---|---|---|
| The dentist | 59 | 1 |
| Friendly staff | 59 | 0 |
| Clear explanations | 34 | 0 |
| Gentle, comfortable care | 28 | 0 |
| Scheduling & wait times | 18 | 0 |
| Great with kids | 12 | 1 |
| Cost, insurance & financing | 10 | 2 |
| Responsiveness | 10 | 0 |
Recent reviews from Google
4.9
430 reviews
Katy Reynolds
2 weeks ago
Kind and realistic, not pushy for extra expenses but honest and professional during appointments
George Desborough
2 months ago
Knowledgeable and professional Very capable and the results were amazing
Madalyn Riemer
Edited 2 months ago
One of the dental hygienists named Gabby is absolutely amazing. I've always had anxiety going to the dentist and she made me super calm. Both dentists are really good also!! Thanks for making it a better experience for me.
Diane Wiesenborn
3 months ago
Michelle is a great hygienist/dental assistant. She’s been doing a wonderful job with me for many years!
Londell Goetze
3 months ago
The staff at Sullivan Dental is amazing. My visits have always been very informative, but this one was especially so! Keep up the great work.
Questions about this practice
What orthodontic treatments does Tronsgard and Sullivan, DDS, PC offer?
Tronsgard and Sullivan, DDS, PC offers: Invisalign, Retainers.
Does Tronsgard and Sullivan, DDS, PC accept dental insurance?
Tronsgard and Sullivan, DDS, PC accepts Aetna.
Is Tronsgard and Sullivan, DDS, PC accepting new patients?
Tronsgard and Sullivan, DDS, PC is currently welcoming new patients in Fargo, ND. Call (701) 232-6983 or book online to schedule.
Where is Tronsgard and Sullivan, DDS, PC located?
Tronsgard and Sullivan, DDS, PC is located at 1231 27th St S. Get directions: https://maps.google.com/?cid=308986666982496084&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA
What are the office hours for Tronsgard and Sullivan, DDS, PC?
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.
Does Tronsgard and Sullivan, DDS, PC offer payment plans?
Yes, Tronsgard and Sullivan, DDS, PC offers flexible payment plans to make orthodontic treatment affordable.
Who are the orthodontists at Tronsgard and Sullivan, DDS, PC?
Tronsgard and Sullivan, DDS, PC is staffed by Dr. Daren T. Sullivan, Dr. Coulton R. Dangerfield.
What is the patient rating for Tronsgard and Sullivan, DDS, PC?
Tronsgard and Sullivan, DDS, PC has a 4.9-star rating based on 430 patient reviews on Google.
Research with AI
Accepting new patients
Payment Plans Available
Weekend Hours
Evening Hours
Online Booking Available
Accessibility & Parking
Wheelchair Accessible Entrance
Wheelchair Accessible Parking
Wheelchair Accessible Restroom
CashCredit CardsDebit CardsContactless / NFCCareCredit
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
- Google reviews synced
- SOURCED
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