◆ #6 highest-rated dentist in Marshalltown

John Collison

★★★★4.6 · 101 Google reviews Dentist in Marshalltown, IA
★ 4.6 rating ◆ Top-rated in Marshalltown ✓ Dental.me Profile

Last updated Aug 7, 2026 · Dental.me Score is independent and can’t be bought.

Quick answer: John Collison in Marshalltown

John Collison has 4.6-star rating across 101 Google reviews, Dental.me Score 92 out of 100, address in Marshalltown, IA, phone number, website, 1 dentist named, 2 business categories, and 4 days with hours on Dental.me. Compare contact details, map context, provider names, business categories, reviews, Dental.me Score, hours, and nearby dental options.

#6 of 14
Marshalltown dentists by Dental.me Score
4.6 vs 4.7
its rating vs the Marshalltown average
Top 43%
review volume — 101 beats 57% of Marshalltown practices

About John Collison

John Collison is located at 210 W Main St, Marshalltown, IA 50158. Its Dental.me profile includes phone, website, dentist names, dental categories, Google rating and review data, business hours, and Google Maps details.

To contact the office, call (641) 753-7000, visit mainstreetdentalmarshalltown.com, and open its Google Maps profile.

Dentists at this practice: John Collison, D.D.S.

Dental categories connected to this profile: General Dentistry and Dentist.

General DentistryDentist

Reviews and ratings for John Collison

Google business data shows John Collison with a 4.6-star rating across 101 reviews.

John Collison has a Dental.me Score of 92, calculated from star-rating strength, review-count confidence, exact review-count tie-breakers, and limited verification signals.

Within Marshalltown, this profile ranks #6 out of 14 scored dental profiles on Dental.me.

View Google reviews for John Collison →

What Dental.me knows about this practice

Location
210 W Main St, Marshalltown, IA 50158
Contact paths
phone, website, and Google Maps
Google review signal
4.6 stars from 101 reviews
Dental.me Score
92/100 score
Dentists connected
John Collison, D.D.S.
Category signals
General Dentistry and Dentist
Business hours
4 days with published hours

How it compares in Marshalltown

RankDentistRatingReviewsScore
#4Drs Hawkins and Urbanowski PC4.921096
#5David Clark5.02592
#6John CollisonYou’re viewing4.610192
#7Chase Frei4.538690
#8Smiles in Motion, P.C.4.31186
For this practice’s team: This practice scores 92. Verify it to raise its Dental.me Score to 95. Verify now →

Practice details

Address
210 W Main St, Marshalltown, IA 50158
Phone
(641) 753-7000
Dentists
John Collison, D.D.S.
Google profile
View on Maps · 101 reviews

Compare and contact John Collison

Compare John Collison using address, phone, website, 4.6-star Google rating, 101 Google reviews, Dental.me Score 92, 1 named dentist, 2 dental categories, and 4 days with published hours.

Open the Marshalltown dentist directory to compare other local profiles, or browse the Iowa dental directory for a statewide view.

Frequently asked questions

How do I contact John Collison?
Call John Collison at (641) 753-7000. For more information, visit mainstreetdentalmarshalltown.com.
Where is John Collison located?
John Collison is located at 210 W Main St, Marshalltown, IA 50158.
Which dentists are at this office?
Dentists at this office include John Collison, D.D.S.
Does John Collison have a website?
Yes. The website for John Collison is mainstreetdentalmarshalltown.com.
What rating does Google show for John Collison?
Google business data shows John Collison with a 4.6-star rating from 101 reviews.
What are John Collison's business hours?
Business hours shown: Monday 7AM–12PM, 1–5PM; Tuesday 7AM–12PM, 1–5PM; Wednesday 7AM–12PM, 1–5PM; Thursday 7AM–12PM, 1–5PM; Friday Closed; Saturday Closed; Sunday Closed.
What dental categories is John Collison connected to?
Business categories connected to this practice include General Dentistry and Dentist.
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Dental.me guides for Marshalltown

How Dental.me verifies this data. We combine provider, location, business-profile, practice website, dentist-submitted, correction, and direct office-confirmation data. Profiles show a last-updated date, and rankings are independent of paid placement. Verification methodology · How we rank

Profile data includes practice, provider, location, and business-profile information organized by Dental.me. Last updated August 7, 2026.