John Nicolette, D.M.D.
John Nicolette, D.M.D. is a provider specialising in General Practice Dentistry in Englewood, CO, registered under NPI 1003019589. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Englewood, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 495 ft away. The nearest transit stop is 495 ft away, served by E Hampden Ave & S Downing St. If you arrive early, there is a coffee shop 433 ft away.
Getting here and what is nearby
Gas station 7-Eleven 180 ft ~1 min
Convenience 7-Eleven 248 ft ~1 min
Restaurant Undici 307 ft ~2 min
Restaurant Bangkok Cafe 336 ft ~2 min
Parking 349 ft ~2 min
Parking 364 ft ~2 min
Restaurant South Philly Cheese Steaks 349 ft ~2 min
Transit S Downing St & E Hampden Ave 409 ft ~2 min
Transit S Downing St & E Hampden Ave 411 ft ~2 min
Coffee Caribou Coffee 433 ft ~2 min
Transit E Hampden Ave & S Downing St 495 ft ~2 min
Parking 495 ft ~2 min
Hotel Marks Home 0.26 mi ~6 min
1625 East Girard Avenue, 80113
Hotel Marks Home 0.26 mi ~6 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 105311 | CO | General Practice Dentistry primary |
This provider holds licence 105311 issued in CO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What General Practice covers
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs. NUCC Health Care Provider Taxonomy, code 1223G0001X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003019589 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 11, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | D.M.D. |
| Practice address |
3510 S MARION ST Englewood, CO 80113 (303) 789-3455 Fax (303) 789-2649 |
| Mailing address |
4366 W LAKE CIR N Littleton, CO 80123 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 1 | 9 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 9 | 5 | 7 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.