Ryann Vasquez, DMD
Ryann Vasquez, DMD is a provider specialising in General Practice Dentistry in Diamond Bar, CA, registered under NPI 1003339805.
Getting there
Here is what surrounds this office in Diamond Bar, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 0.21 mi away. There is EV charging 0.43 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.42 mi away, served by Foothill Transit 482. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Convenience ampm 529 ft ~3 min
780 Brea Canyon Road, City of Industry 91789
Gas station Arco 601 ft ~3 min
780 Brea Canyon Road, City of Industry 91789
Parking 695 ft ~3 min
Parking 886 ft ~4 min
Parking 0.21 mi ~5 min
Gas station Shell 0.34 mi ~7 min
21103 Golden Springs Drive, Diamond Bar 91789-3924
24/7
Restaurant In-N-Out Burger 0.34 mi ~7 min
21133 Golden Springs Drive, Diamond Bar 91765
Mo-Th 10:30-01:00; Fr-Sa 10:30-01:30; Su 10:30-01:00
Gas station Chevron 0.35 mi ~7 min
21095 Golden Springs Drive, Diamond Bar 91765
Transit Foothill Transit 482 0.36 mi ~8 min
Transit Foothill Transit 482 0.36 mi ~8 min
Restaurant McDonald's 0.36 mi ~8 min
21095 Golden Springs Road, Diamond Bar 91789
05:00-23:00
Restaurant Delicious Food Corner 0.37 mi ~8 min
20965 Golden Springs Drive, Diamond Bar 91765
Mo-Su 08:30-21:00
Coffee Starbucks 0.39 mi ~8 min
21060 Golden Springs Drive, Diamond Bar 91789
Mo-Fr 05:00-20:30; Sa-Su 05:30-20:30
Grocery Diamond Fresh Farmers Market 0.39 mi ~8 min
21168 Golden Springs Drive, Diamond Bar 91765
Transit Foothill Transit 482 0.42 mi ~9 min
EV charging Tesla Supercharger 0.43 mi ~9 min
Grocery Hannam Market World 0.46 mi ~10 min
21080 Golden Springs Drive, Diamond Bar 91789
Mo-Su 08:00-22:00
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 |
|---|---|---|
| DDS101514 | CA | General Practice Dentistry primary |
This provider holds licence DDS101514 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
- Order And Referring Only - Dentist
- PAC ID
- 5092089649
- Enrollment ID
- I20170920001059
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Dentist. 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 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 | 1003339805 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 24, 2017 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | DMD |
| Practice address |
817 WINDWOOD DR Diamond Bar, CA 91789 (909) 967-8811 |
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 | 3 | 3 | 9 | 8 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 9 | 8 | 0 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.