Independent practice
Dr. John C. Gengo, DDS
General dentistry · Olean, NY
4.9336 Google reviews
Dr. John C. Gengo, DDS
Key facts
- Dr. John C. Gengo, DDS is 1 of 16 general dentists listed in Olean, NY.
- Independent practice.
- Public rating 4.9 from 336 Google reviews.
SmilesAtlas verification
What we independently checked against the official record. No other directory shows this.
i
License not independently verified
This state does not publish a free license roster we can match, so we show the federal NPI record and a board link instead of a status. We never fabricate a status.
NPPES + state board link✓
Independent practice
Registered as a sole proprietor with no parent organization.
NPPES + ownership checkWhat we could not verify yet: What we have not confirmed: specialty board certification and CE currency. We would rather show a gap than a guess, so these stay empty until we can verify them.
Public record last checked: June 2026.
About this practice
Dr. John C. Gengo, DDS is a general dental practice at 120 North Second St. in Olean, NY. Public records show it as independent practice (registered as a sole proprietor with no parent organization). It has 336 Google reviews at 4.9 stars. Posted hours cover 7 days a week.
Visit
Address
120 North Second St., Olean, NY 147602502
Phone
7163728970
Hours
Friday: ClosedMonday: 8am to 5pmSaturday: ClosedSunday: ClosedThursday: 8am to 5pmTuesday: 8am to 5pmWednesday: 8am to 5pm
Reputation
4.9
336 Google reviews
Frequently asked questions
Is Dr. John C. Gengo, DDS a verified dentist?
Dr. John C. Gengo, DDS is listed in the federal NPI registry, is independent practice, and has 336 Google reviews. We last checked the public record in June 2026.
How can I double-check Dr. John C. Gengo, DDS?
Open the official NPI record at NPPES NPI Registry (CMS) and search the state dental board for the license number to confirm the status shown here.
Does Dr. John C. Gengo, DDS accept new patients?
We do not have a confirmed new-patient status for Dr. John C. Gengo, DDS; call the office to check.
Provyx
Need every dental practice in your market as a clean B2B dataset?
Listed publicly here. For the full general dental dataset across the market, request access.
Request access