An independent shortlist of 5 Johnstown practices, scored on 858 reviews, experience, and care.
Quick answer
Our top ranked dental practice in Johnstown, Colorado is Dr. Nathan Green, DDS, rated 5.0 out of 5 across 157 public reviews. Other top choices include Dr. Steven Ralston, DDS and Dr. Jared Error, DMD, MBA. Johnstown has a population of about 19,511, and the 5 strongest local practices are compared on this page.
Behind every healthy smile in Johnstown, Colorado is a dentist worth keeping, and this list helps you find one. We gathered the real dental practices serving Johnstown, verified them, and scored them on the factors that matter to patients. Use it to shortlist a few offices, then call the one that fits you best.
Across the 5 top practices we highlight in Johnstown, patients can access general dentistry, orthodontics, and pediatric dentistry. 2 of these practices on this page offer orthodontics. The Johnstown practices on this list average 11 years in practice, with Dr. Nathan Green, DDS among the most established at 17 years. Listed offices serve several parts of the city, including the 80534, 80631 ZIP areas. Together these practices hold 858 public Google reviews, led by Dr. Steven Ralston, DDS with 258. The average rating across this Johnstown list is 4.9 out of 5.
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General Dentistry · Pediatric Dentistry
A Johnstown dental office focused on general dentistry and pediatric dentistry, serving patients for 17 years. Rated 5.0 out of 5 across 157 public Google reviews.
General Dentistry
General dentistry in Johnstown, delivered by serving patients for 15 years. Rated 5.0 out of 5 across 258 public Google reviews.
Orthodontics
Offering orthodontics in Johnstown, serving patients for 11 years. Rated 5.0 out of 5 across 56 public Google reviews.
Orthodontics
Offering orthodontics in Johnstown, an established local practice. Rated 4.9 out of 5 across 165 public Google reviews.
General Dentistry
General dentistry in Johnstown, delivered by an established local practice. Rated 4.7 out of 5 across 222 public Google reviews.
Ratings on this list run from 4.7 to 5.0, review counts from 56 to 258, and registry records from 2 to 17 years.
| Rank | Practice | Google rating | Reviews | Years on record | Services |
|---|---|---|---|---|---|
| #1 | Dr. Nathan Green, DDS | 5.0 | 157 | 17 | General Dentistry, Pediatric Dentistry |
| #2 | Dr. Steven Ralston, DDS | 5.0 | 258 | 15 | General Dentistry |
| #3 | Dr. Jared Error, DMD, MBA | 5.0 | 56 | 11 | Orthodontics |
| #4 | Smile Doctors Of Colorado, P.C. | 4.9 | 165 | 2 | Orthodontics |
| #5 | ToothTown of Greeley | 4.7 | 222 | — | General Dentistry |
4 of the 5 Johnstown practices on this page are matched to their record in the US National Provider Identifier registry, and 5 carry a public Google rating. Details were last reviewed on August 28, 2026.
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The practices we list in Johnstown, Colorado average 4.9 stars. That matches the nearby cities shown here.
| City | Average rating | Practices ranked | Top pick |
|---|---|---|---|
| Johnstown | 4.9 | 5 | Dr. Nathan Green, DDS |
| Denver | 4.9 | 5 | Dr. Kara Arnold, DDS |
| Colorado Springs | 4.9 | 5 | Dr. Thomas Baumgardner, DMD |
| Aurora | 4.9 | 5 | Aspenwood Dental Associates |
Your oral health is closely tied to the health of the rest of your body. Dentists in Johnstown, Colorado do preventive work like cleanings, restorative work like fillings and crowns, and much in between. When something more complex comes up, they coordinate specialist treatment so your care stays joined up.
General Dentistry3 of 5 listed practices
General dentists are your first stop for everyday care: checkups, cleanings, fillings, crowns, and preventive advice. In Johnstown, offered by Dr. Nathan Green, DDS, Dr. Steven Ralston, DDS, ToothTown of Greeley.
Orthodontics2 of 5 listed practices
Braces and clear aligners fix crowding, gaps, and bite issues, and orthodontists plan that treatment. In Johnstown, offered by Dr. Jared Error, DMD, MBA, Smile Doctors Of Colorado, P.C..
Pediatric Dentistry1 of 5 listed practices
Children's dentists are trained to make early visits calm and to catch problems as teeth develop. In Johnstown, offered by Dr. Nathan Green, DDS.
Before your next visit, it helps to know what modern dentistry can do. Catch up on dental advances and what to ask your Johnstown dentist.
Our Johnstown, Colorado ranking is editorial, not paid: each practice is scored on reviews, review volume, registry credentials, experience, and online presence. Sponsored spots are labeled and never change the organic order.
Read our full ranking methodologyLook at the track record
Among the 5 practices listed in Johnstown, Colorado, registry records show an average of 11 years in operation, and 2 have been on record for 15 years or more. Dr. Nathan Green, DDS has the longest record at 17 years. A long track record usually points to steady, consistent care.
Look at review volume
The listed Johnstown, Colorado practices hold 858 public Google reviews between them, with an average rating of 4.9. A score backed by many reviews, like the 258 for Dr. Steven Ralston, DDS, tells you more than a perfect rating from a handful of patients. Look for recent reviews that mention wait times and how procedures felt.
Pick a practice that covers your needs
3 of the 5 listed Johnstown, Colorado practices offer services beyond general dentistry, including orthodontics and pediatric dentistry. If you need orthodontics, start with Dr. Jared Error, DMD, MBA and Smile Doctors Of Colorado, P.C..
Choose somewhere convenient
The practices here are spread across 2 ZIP codes (80534 and 80631). Check parking and opening hours before you book.
Try a cleaning first
Treat your first appointment in Johnstown, Colorado as a trial. If you feel rushed or pushed toward extra treatment, try another practice on this list.
New patient visits in Johnstown, Colorado follow a familiar, unhurried pattern. Most offices start with photos or X rays, a gum health check, and a conversation about any concerns you have. You leave with a written plan, an estimate for any work, and a recommended schedule for the next visit.
Dental costs in Johnstown, Colorado depend on the treatment and on whether you have insurance. Routine care is the affordable part; restorative and cosmetic treatment is where costs climb. Confirm your plan is accepted when you call a Johnstown office, and get major work quoted first.
Before you commit to a dentist in Johnstown, Colorado, a few direct questions tell you a lot about the practice.
Dr. Nathan Green, DDS holds the number 1 spot on our Johnstown list, with a 5.0 star Google rating from 157 reviews. Dr. Steven Ralston, DDS ranks second with a 5.0 rating.
Dr. Steven Ralston, DDS has the most public Google reviews among the practices we list in Johnstown, with 258. Across all 5 listed practices there are 858 reviews in total.
In Johnstown, Colorado, the 5 rated practices we list average 4.9 out of 5 on Google, and the highest rating is 5.0.
Of the practices we list, Dr. Nathan Green, DDS has the longest record in the national provider registry, at more than 17 years. The average across the list is 11 years.
Besides general dentistry, the listed Johnstown, Colorado practices offer orthodontics (2 practices) and pediatric dentistry (1 practice).
The Johnstown practices we list are in ZIP codes 80534 and 80631. The biggest cluster is in 80534, with 4 of the 5.
The Johnstown, Colorado ranking comes from one score per practice that blends review quality, review volume, verified credentials, experience, and online presence across the 5 practices we compared.
No. A practice can buy a clearly labeled sponsored spot on the Johnstown, Colorado page, but the organic order is set only by our scoring.
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