Timothy Nguyen, D.D.S.
Timothy Nguyen, D.D.S. is a provider specialising in Oral and Maxillofacial Surgery (Dentist) in Milpitas, CA, registered under NPI 1003019365. 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 Milpitas, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.32 mi away. There is EV charging 0.42 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 576 ft away, served by South Milpitas Boulevard & Garden Street. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Parking 162 ft ~1 min
Transit Montague Expressway & Pecten Court 304 ft ~2 min
Parking 393 ft ~2 min
Transit Montague Expressway & South Milpitas Boulevard 413 ft ~2 min
Transit South Milpitas Boulevard & Garden Street 576 ft ~3 min
Parking 0.32 mi ~7 min
Restaurant Burger King 0.40 mi ~9 min
1475 Dempsey Road, Milpitas 95035
Mo-Sa 06:00-24:00; Su 07:00-24:00
Grocery Lee's Supermarket Milpitas 0.40 mi ~9 min
777 East Capitol Avenue, Milpitas 95035
EV charging Tesla Supercharger 0.42 mi ~9 min
Hotel Courtyard Milpitas Silicon Valley 0.42 mi ~9 min
Restaurant Stuft Pizza Milpitas 0.43 mi ~9 min
1426 Dempsey Road, Milpitas 95035
Mo-Fr 09:00-20:00; Sa,Su 11:00-20:00
Convenience ampm 0.44 mi ~9 min
2104 North Capitol Avenue, San Jose 95132
Gas station Capitol Arco 0.44 mi ~9 min
2104 North Capitol Avenue, San Jose 95132
Hotel TownePlace Suites Milpitas Silicon Valley 0.44 mi ~9 min
Restaurant Giò Chả Đức Hương 0.46 mi ~10 min
2090 North Capitol Avenue, San Jose 95132
Convenience The Spirit Box 0.47 mi ~10 min
2062 North Capitol Avenue, San Jose 95132
Coffee Ozon Cafe 0.48 mi ~10 min
2056 North Capitol Avenue, San Jose 95132
Gas station Flyers Energy 0.48 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 |
|---|---|---|
| 40381 | CA | Oral and Maxillofacial Surgery (Dentist) primary |
This provider holds licence 40381 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 Oral and Maxillofacial Surgery covers
The specialty of dentistry which includes the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region. NUCC Health Care Provider Taxonomy, code 1223S0112X
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 | 1003019365 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 6, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | D.D.S. |
| Practice address |
991 MONTAGUE EXPY STE 102 Milpitas, CA 95035 (408) 946-6666 Fax (408) 935-8805 |
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 | 3 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 9 | 3 | 3 |
Sum = 45 · next multiple of 10 = 50 · 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.