Gregory Culton, DMD
Gregory Culton, DMD is a provider specialising in General Practice Dentistry in National City, CA, registered under NPI 1003238866. 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 National City, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 338 ft away. The nearest transit stop is 691 ft away. If you arrive early, there is a coffee shop 782 ft away.
Getting here and what is nearby
Parking 65 ft ~1 min
Restaurant Carl's Jr. 237 ft ~1 min
Parking 270 ft ~2 min
Parking 338 ft ~2 min
Transit 349 ft ~2 min
Transit 371 ft ~2 min
Restaurant Papa John's 432 ft ~2 min
1130 East Plaza Boulevard, National City 91950
Mo-Th 11:00-23:00; Fr-Sa 11:00-24:00; Su 11:00-23:00
Coffee SD Boba Tea 644 ft ~3 min
1105 East Plaza Boulevard
Mo-Th,Su 10:00-22:00; Fr-Sa 10:00-23:00
Coffee Starbucks 659 ft ~3 min
Transit 691 ft ~3 min
Restaurant Subway 709 ft ~3 min
925 East Plaza Boulevard, National City 91950
07:00-22:00
Coffee Ice Box 782 ft ~3 min
Grocery Seafood City 1,019 ft ~4 min
Convenience 7-Eleven 0.31 mi ~7 min
Grocery Walmart Supercenter 0.33 mi ~7 min
1200 Highland Avenue, National City 91950
Mo-Su 06:00-24:00
Hotel Holiday Inn Express 0.36 mi ~8 min
Grocery Carnival Supermarket 0.42 mi ~9 min
1750 East 8th Street, National City 91950
Mo-Su 06:30-22:30
Convenience 7-Eleven 0.49 mi ~10 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 |
|---|---|---|
| 27115 | CA | General Practice Dentistry primary |
This provider holds licence 27115 issued in CA. 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 | 1003238866 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 14, 2014 |
| Last updated | Jan 14, 2014 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | DMD |
| Practice address |
1210 E PLAZA BLVD STE 405 National City, CA 91950 (619) 477-2787 Fax (619) 477-1682 |
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 | 2 | 3 | 8 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 7 | 8 | 3 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.