John Vinh, O.D.
John Vinh, O.D. is a provider specialising in Optometrist in National City, CA, registered under NPI 1003102724. 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 1, 2026. Parking is available about 359 ft away. The nearest transit stop is 832 ft away. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Parking 230 ft ~1 min
Parking 320 ft ~2 min
Parking 359 ft ~2 min
Transit 489 ft ~2 min
Transit 790 ft ~3 min
Transit 832 ft ~4 min
Grocery Vallarta 0.24 mi ~5 min
901 South Euclid Avenue
Grocery Island Pacific Seafood Market 0.36 mi ~8 min
2720 East Plaza Boulevard, National City 91950
Mo-Su 08:00-21:00
Coffee Starbucks 0.41 mi ~9 min
2230 East Plaza Boulevard, Grove Plaza, National City 91950
Restaurant Dunkin' 0.42 mi ~9 min
2139 East Plaza Boulevard, National City 91950
05:00-23:00
Restaurant Popeyes 0.43 mi ~9 min
2210 East Plaza Boulevard, National City 91950
Mo-Th 10:00-22:00; Fr-Sa 10:00-22:30; Su 10:00-22:00
Grocery Carnival Supermarket 0.43 mi ~9 min
1750 East 8th Street, National City 91950
Mo-Su 06:30-22:30
Convenience 7-Eleven 0.45 mi ~9 min
15 North Euclid Avenue, National City 91950-1933
Restaurant McDonald's 0.47 mi ~10 min
2140 Plaza Boulevard, National City 91950
Mo-Su 06:00-22:00
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 |
|---|---|---|
| 14177 | CA | Optometrist primary |
This provider holds licence 14177 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Optometry
- PAC ID
- 7012339310
- Enrollment ID
- I20200615001560
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
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 | 1003102724 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 21, 2011 |
| Last updated | Oct 28, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | O.D. |
| Practice address |
655 EUCLID AVE STE 302 National City, CA 91950 (619) 472-1010 Fax (619) 544-2184 |
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 | 1 | 0 | 2 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 4 | 7 | 4 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.