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.
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.
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.
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.