Byron Chan, D.D.S.
Byron Chan, D.D.S. is a provider specialising in Orthodontics and Dentofacial Orthopedics Dentistry in Torrance, CA, registered under NPI 1003179110.
Getting there
Here is what surrounds this office in Torrance, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 0.32 mi away. There is EV charging 0.28 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 722 ft away. A pharmacy sits 0.24 mi from the entrance (Premier Family), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 778 ft away.
Getting here and what is nearby
Coffee The Coffee Bean & Tea Leaf 228 ft ~1 min
21300 Hawthorne Boulevard, Torrance 90503
Mo-Th 05:30-21:00; Fr 05:30-22:00; Sa 06:00-22:00; Su 06:00-21:00
Restaurant Chipotle 256 ft ~1 min
21300 Hawthorne Boulevard, Torrance 90503
10:30-23:00
Restaurant Denny's 260 ft ~1 min
Grocery Hannam Chain 376 ft ~2 min
21305 Hawthorne Boulevard
Coffee Copa Vida 434 ft ~2 min
21250 Hawthorne Boulevard, Torrance 90503
Mo-Fr 07:00-15:00
Parking 509 ft ~2 min
21258 Hawthorne Boulevard
Transit Hawthorne/Torrance 632 ft ~3 min
Restaurant Poké Bar 651 ft ~3 min
Transit Hawthorne/Del Amo Circle 710 ft ~3 min
Transit 722 ft ~3 min
Coffee Philz Coffee 778 ft ~3 min
Mo-Th 05:30-19:00; Fr 05:30-20:30; Sa 06:00-20:30; Su 06:00-19:00
Convenience 76 920 ft ~4 min
Gas station 76 910 ft ~4 min
Hotel Torrance Marriott Redondo Beach 881 ft ~4 min
3635 Fashion Way, Torrance 90503
Hotel Howard Johnson by Wyndham Torrance 0.23 mi ~5 min
3673 Torrance Boulevard, Torrance 90503
Hotel Residence Inn 0.24 mi ~5 min
Pharmacy Premier Family 0.24 mi ~5 min
Parking 0.25 mi ~5 min
3490 Fashion Way
EV charging Tesla Supercharger 0.26 mi ~6 min
EV charging 0.27 mi ~6 min
EV charging 0.28 mi ~6 min
Parking 0.32 mi ~7 min
3480 Fashion Way
Grocery Mitsuwa Marketplace 0.35 mi ~7 min
3525 West Carson Street, Torrance 90503
09:00-21:00
Grocery Seiwa 0.37 mi ~8 min
Convenience 7-Eleven 0.44 mi ~9 min
Convenience 7-Eleven 0.49 mi ~10 min
Gas station 7-Eleven 0.50 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 |
|---|---|---|
| 15025 | CA | Orthodontics and Dentofacial Orthopedics… primary |
This provider holds licence 15025 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 Orthodontics and Dentofacial Orthopedics covers
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures. NUCC Health Care Provider Taxonomy, code 1223X0400X
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 | 1003179110 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 22, 2012 |
| Last updated | Jun 22, 2012 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.D.S. |
| Practice address |
21320 HAWTHORNE BOULEVARD 219 Torrance, CA 90503 (310) 543-2555 Fax (310) 543-2556 |
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 | 7 | 9 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 7 | 9 | 1 | 2 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.