Welcome to Tronsgard & Sullivan, DDS, Partnership

Dentist Fargo, ND - Tronsgard & Sullivan, DDS, Partnership | Paul J. Tronsgard, DDS & Daren T. Sullivan, DDS

Our dental practice is based on trust, integrity, commitment, service and excellence. We take great pride in keeping your visits positive. Our promise to you is that the dentistry we provide will be the highest level of quality.

To our patients: Thank you for your kind referrals. This is the greatest compliment you can give and we are grateful that you have the confidence in us to recommend our office to your family and friends.

Not only are we a leading dentist in Fargo, we are a full-service practice providing for all of your dental needs. Our services include:

Safety Practices and Sterilization Procedures

We go above and beyond the American Dental Association (ADA) and Occupational Safety and Health Administration (OSHA) recommended standards for cleanliness and safety. Before your visit, we thoroughly sanitize each room and disinfect all of our equipment in a designated sterilization area. You can rest assured that your safety and your comfort are our top priorities. We worry about the cleanliness of our office so you’ll never have to!

Patient Education

Here at Tronsgard & Sullivan, DDS, Partnership, not only are we focused on the beauty of your smile, we’re also concerned about your health. A healthy mouth can contribute to a greater quality of life and a decreased risk for serious health complications. Dental decay and disease not only wreck smiles, but can also contribute to heart attack, stroke, diabetes complications, and even dementia. Drs. Tronsgard, Sullivan and Dangerfield along with their team want to empower you to make wise, well-informed decisions for your oral health through individual consultation and education.

We also make sure that we are well informed about your medical history, current medications, and any other factors that might affect your dental health and treatment.

Should you ever need additional information about our practice, we are always available to answer your questions. Let us care for your entire family! We look forward to meeting you.


Our office complies with the Health Insurance Portability and Accountability Act of 1996 ( HIPAA ).


Meet Our Doctors

Learn Who We Are


What Our Clients Say About Us

  • "I overheard an incredibly sweet comment from the receptionists about every customer after they had walked out the door. Madi was kinda and helpful and made the process quick and easy! Daren greeted me with a firm handshake like usual and always has something nice to say, and answered questions perfectly."
    Joseph 9/9/2019
  • "Absolutely love this place!"
    Jodi 9/5/2019
  • "Literally the friendliest dental experience I have ever had."
    Abigail 8/27/2019
  • "Highly recommend! My children actually like their dentist and that's unheard of as one of them had a bad experience before. My fears have vanished as well!! Very good at putting you at ease.Office staff is always friendly and provide an excellent client experience."
    Sandra 8/23/2019
  • "First dentist in a long time that took the time to explain things and actually gave me different options. As always though, the sticker shock can be a little overwhelming"
    Thomas 8/20/2019

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Hours of Operation

Our Regular Schedule


7:00 am-5:00 pm


7:00 am-5:00 pm


7:00 am-5:00 pm


7:00 am-5:00 pm


7:00 am-4:00 pm