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Invisalign ProviderAccepting new patients

Arch Dental

Arch Dental is a family and cosmetic dental practice in Fargo, ND led by Dr.

321 4th St N, Fargo, ND 58102
4.9(251 reviews)
Call Now(701) 235-6075Book OnlineWebsiteDirections
Arch Dental

About Arch Dental

Dr. Derek Harnish's personal follow-up calls after procedures and a bright, tech-equipped office set the tone for families juggling several kids in treatment.

Arch Dental is a general dental practice in Fargo that also offers Invisalign, traditional braces, clear aligners, and TMJ treatment. Reviews point to a modern, well-equipped office with plants, music, and up-to-date technology, and many mention Dr. Harnish personally checking in the day after procedures and considering options beyond just the teeth. The practice also comes up often among families managing multiple children's dental care at once, and several reviews note comfort touches like blankets, noise-cancelling headphones, and nitrous oxide for anxious patients.

Summary of 168 patient reviews, December 2014–April 2026, updated September 2026

Arch Dental is a family and cosmetic dental practice in Fargo, ND led by Dr.

Derek Harnish. The practice offers comprehensive dental services including Invisalign, restorative dentistry, cosmetic dentistry, and whole-health solutions such as TMJ treatment and sleep apnea management. They serve patients of all ages with an emphasis on patient empowerment and holistic care.

Treatments offered

InvisalignInvisalignTMJ TreatmentTMJ TreatmentClear AlignersClear AlignersTraditional BracesTraditional Braces
GuidesHow much does Invisalign cost? →Clear aligner costs explained →Adult braces cost guide →

Who They Treat

Arch Dental provides orthodontic treatment for the following age groups:

Children
Ages 6–11
Teens
Ages 12–17
Adults
Ages 18+

Technology & Equipment

Arch Dental uses modern orthodontic technology to deliver precise, comfortable treatment.

3D Digital Scanning
Accelerated Treatment
Digital Records
iTero/TRIOS

Orthodontists at this office

provider
headshot

Dr. Derek Harnish, DDS

NPI verified · no bio or photo on file

Lead OrthodontistNPI VERIFIEDAccepting New Patients

Insurance accepted

They accept most insurance plans and have financial experts to guide patients through insurance benefits. They also file claims for patients.

What patients say

Latest review 6 months ago

What patients praise

  • Dr. Harnish is described as personally calling patients the day after major procedures to check on their recovery.
  • The office is repeatedly noted for its modern, clean design and updated equipment.
  • Anxious patients mention comfort measures like blankets, noise-cancelling headphones, and nitrous oxide during visits.

Things to know

  • A few reviews describe billing or insurance confusion, including one case where front-desk information led to an unexpected bill.

Who it suits

  • Families with several kids in treatment
  • Anxious or nervous patients

Doctors patients mention

  • Dr. Derek Harnish · 85 reviews

Orthodontic care in reviews

A few reviews touch on orthodontic treatment here, including one describing a husband's Invisalign care and a decision to hold off on jaw surgery after further evaluation, and another describing a walkthrough of insurance coverage for a corrections treatment plan.

Last 12 months
7 reviews
averaging 4.4★
Owner replies
49% of reviews
Reviews per month
7
Oct 2023Sep 2026
Reviews per month
Oct 20230
Nov 20230
Dec 20230
Jan 20240
Feb 20240
Mar 20240
Apr 20247
May 20240
Jun 20241
Jul 20240
Aug 20240
Sep 20240
Oct 20240
Nov 20240
Dec 20240
Jan 20250
Feb 20252
Mar 20251
Apr 20254
May 20255
Jun 20251
Jul 20254
Aug 20250
Sep 20251
Oct 20250
Nov 20250
Dec 20251
Jan 20260
Feb 20262
Mar 20260
Apr 20264
May 20260
Jun 20260
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Sep 20260
Star ratings
  • 5★241
  • 4★5
  • 3★0
  • 2★2
  • 1★5
Average rating by year
  • 20145.0
  • 20155.0
  • 20165.0
  • 20174.0
  • 20184.9
  • 20195.0
  • 20205.0
  • 20214.8
  • 20225.0
  • 20234.9
  • 20244.9
  • 20254.8
  • 20264.3
1★5★
Treatments patients mention
  • Invisalign / clear aligners3
What patients talk about
PraiseCriticism
  • Friendly staff55 / 1
  • The dentist51 / 2
  • Gentle, comfortable care28
  • Clear explanations26
  • Office & technology24
  • Scheduling & wait times11
  • Cost, insurance & financing7 / 3
  • Treatment results8 / 1
What patients talk about
ThemePraiseCriticism
Friendly staff551
The dentist512
Gentle, comfortable care280
Clear explanations260
Office & technology240
Scheduling & wait times110
Cost, insurance & financing73
Treatment results81

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Recent reviews from Google

4.9
251 reviews
Sierra link
Sierra link
4 months ago
“

I can’t say enough good things about Arch Dental, from how efficient the scheduling process was from the beginning, to how thorough my dental care has been. Arch Dental makes me feel comfortable at each appointment, to the point that I actually enjoy going! Dr. Harnish and the team are truly great at their craft.

Review from Google

Joey Krussow
Joey Krussow
4 months ago
“

From the very first visit I felt comfortable, informed of what my treatment plans looked like. We are actually moving our entire family to use Arch Dental from here on out. Highly recommend!!!!

Review from Google

Carson Bring
Carson Bring
5 months ago
“

Nicole and Dr. Harnish were really fantastic. This is a team of passionate people who treat their patients well. Best dentist I've ever been to.

Review from Google

Kody H
Kody H
6 months ago
“

Called me many months after a visit. The way my insurance is set up I have to pay in full for dental work upfront. Insurance then sends me a check for what was covered. Arch dental didn't charge me the full amount and then called me saying I owed a bill of $139. If they would of had their numbers right and charged me the day I was there it would have been fine. But now I had to pay for something I had done 6 months ago. Very frustrating. If the business under charged that is their fault not mine. I will not be stepping foot back in this place. The work they did also made my tooth hurt for months. I've never had pain from dental work before that lasted longer than a few days.

Review from Google

Rachael Noble
Rachael Noble
7 months ago
“

I seriously can’t recommend Arch Dental enough. I’m a student in the area and dental visits used to make me super anxious, but they completely changed that for me. In just two visits they already have me feeling confident about my smile again. Everyone there is incredibly kind, patient, and explains everything in a way that actually makes sense instead of feeling overwhelming. You can tell they genuinely care about their patients and want you to feel comfortable. If you’re nervous about the dentist or have been putting it off, this is the place to go. So grateful I found them!!!

Review from Google

Read all 251 reviews on Google →

Questions about this practice

What orthodontic treatments does Arch Dental offer?+
Arch Dental offers: Invisalign, TMJ Treatment, Clear Aligners, Traditional Braces.
Does Arch Dental offer free consultations?+
Yes, Arch Dental offers a free initial orthodontic consultation. Call (701) 235-6075 or book online to schedule.
Is Arch Dental accepting new patients?+
Arch Dental is currently welcoming new patients in Fargo, ND. Call (701) 235-6075 or book online to schedule.
Where is Arch Dental located?+
Arch Dental is located at 321 4th St N. Get directions: https://maps.google.com/?cid=15856563929991842550&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA
What are the office hours for Arch Dental?+
Arch Dental office hours: Mon 8:00 AM–4:00 PM, Tue 8:00 AM–3:00 PM, Wed 8:00 AM–4:00 PM, Thu 8:00 AM–4:00 PM, Fri Closed–Closed, Sat Closed–Closed, Sun Closed–Closed.
Does Arch Dental offer payment plans?+
Yes, Arch Dental offers flexible payment plans to make orthodontic treatment affordable.
Who are the orthodontists at Arch Dental?+
Arch Dental is staffed by Dr. Derek Harnish.
What is the patient rating for Arch Dental?+
Arch Dental has a 4.9-star rating based on 251 patient reviews on Google.

Research with AI

ChatGPTPerplexityClaude
321 4th St N
Fargo, ND 58102
Get Directions
(701) 235-6075
archdentalfargo.com/
Book Online
info@archdentalfargo.com
Open in Google Maps
Accepting new patients
Free Consultation
Payment Plans Available
Online Booking Available

Accessibility & Parking

Wheelchair Accessible Entrance
Wheelchair Accessible Parking
Wheelchair Accessible Restroom
Free Lot Parking
CashCredit CardsDebit CardsContactless / NFCCareCredit
Mon8:00 AM – 4:00 PM
Tue8:00 AM – 3:00 PM
Wed8:00 AM – 4:00 PM
Thu8:00 AM – 4:00 PM
FriClosed
SatClosed
SunClosed

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Back to Fargo Orthodontists

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