Deborah Chon, M.D.
Deborah Chon, M.D. is an Endocrinology, Diabetes & Metabolism Physician in Torrance, CA, registered under NPI 1003173949.
Getting there
Here is what surrounds this office in Torrance, based on OpenStreetMap data collected Sep 9, 2026. Parking is available about 309 ft away. There is EV charging 0.25 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.20 mi away. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking 62 ft ~1 min
Parking 260 ft ~1 min
Parking 309 ft ~2 min
Coffee Caffè Tre Venezie 634 ft ~3 min
Transit 957 ft ~4 min
Transit 0.20 mi ~5 min
Transit 0.20 mi ~5 min
Coffee Cafeteria 0.20 mi ~4 min
"school need"
Restaurant Shakey's 0.21 mi ~5 min
EV charging ChargePoint 0.25 mi ~5 min
Restaurant Eina 0.26 mi ~6 min
Pacific Coast Highway
Restaurant Pasta e Pasta 0.27 mi ~6 min
3629 Pacific Coast Highway
Convenience Tucker's Market 0.33 mi ~7 min
3690 Newton Street, Torrance 90505
Mo-Th 08:00-21:30; Fr,Sa 08:00-22:00; Su 09:00-21:00
Grocery Tokyo Central 0.34 mi ~7 min
3665 Pacific Coast Highway, Torrance 90505
08:00-22:00
Grocery Arya International Market 0.35 mi ~7 min
24202 Hawthorne Boulevard, Torrance 90505
Gas station Chevron 0.41 mi ~9 min
Hawthorne Boulevard, Torrance 90505
Convenience ExtraMile 0.42 mi ~9 min
Coffee Starbucks 0.49 mi ~10 min
23865 Hawthorne Boulevard
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 |
|---|---|---|
| 12189893 | CA | Endocrinology, Diabetes & Metabolism… primary |
This provider holds licence 12189893 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 - Endocrinology
- PAC ID
- 4183998842
- Enrollment ID
- I20170919001157
Medicare enrolment is recorded as approved under the provider type Practitioner - Endocrinology. 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 Endocrinology, Diabetes & Metabolism covers
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems. NUCC Health Care Provider Taxonomy, code 207RE0101X
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 | 1003173949 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 17, 2012 |
| Last updated | Nov 30, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.D. |
| Practice address |
3445 PACIFIC COAST HWY STE 100 Torrance, CA 90505 (310) 542-6333 |
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 | 3 | 9 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 7 | 6 | 9 | 8 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.