Thomas Nguyen, D.D.S.
Thomas Nguyen, D.D.S. is a provider specialising in Dentist in Chico, CA, registered under NPI 1003092024. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Chico, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 708 ft away. There is EV charging 561 ft from the office (Blink) — useful if you are driving in from out of town. The nearest transit stop is 802 ft away. If you arrive early, there is a coffee shop 0.38 mi away.
Getting here and what is nearby
Restaurant Subway 161 ft ~1 min
1947 East 20th Street, Chico 95928
Mo-Su 9:30-21:30
Parking 240 ft ~1 min
Restaurant KFC 278 ft ~2 min
EV charging ChargePoint 385 ft ~2 min
Restaurant Chipotle 346 ft ~2 min
EV charging Tesla Supercharger 471 ft ~2 min
Grocery Grocery Outlet 525 ft ~2 min
1927 East 20th Street, Chico 95928
EV charging Blink 561 ft ~3 min
Gas station Arco 631 ft ~3 min
Parking Chico Mall Parking 678 ft ~3 min
Parking 708 ft ~3 min
Convenience ampm 732 ft ~3 min
Transit 802 ft ~4 min
Hotel Hotel Káterina 829 ft ~4 min
Hotel Oxford Suites Chico 877 ft ~4 min
Coffee Dutch Bros. Coffee 946 ft ~4 min
Coffee J&J Cafe 0.20 mi ~5 min
Convenience Dino Mart 0.24 mi ~5 min
Gas station Sinclair 0.25 mi ~5 min
Grocery WinCo Foods 0.25 mi ~5 min
Hotel Holiday Inn Express & Suites Chico 0.28 mi ~6 min
Grocery FoodMaxx 0.35 mi ~8 min
2051 Doctor Martin Luther King Junior Parkway, Chico
Coffee Starbucks 0.38 mi ~8 min
Gas station Costco Gasoline 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 |
|---|---|---|
| 45595 | CA | General Practice Dentistry |
| 111402 | CA | Dentist primary |
This provider holds licence 45595 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 Dentist covers
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist. NUCC Health Care Provider Taxonomy, code 122300000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry General Practice | 45595 | CA | |
| 122300000X | Dentist | 111402 | CA | primary |
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 | 1003092024 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 21, 2008 |
| Last updated | Jun 4, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.D.S. |
| Practice address |
1931 E 20TH ST Chico, CA 95928 (530) 961-5926 |
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 | 9 | 2 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 4 | 0 | 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.