Ngoc Hong Duong, RHIA
Ngoc Hong Duong, RHIA is a Health Information Technician in El Cajon, CA, registered under NPI 1003615295. 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 El Cajon, based on OpenStreetMap data collected Oct 10, 2026. Parking is available about 551 ft away. The nearest transit stop is 0.35 mi away. A pharmacy sits 0.32 mi from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 195 ft ~1 min
Parking 327 ft ~2 min
Transit 533 ft ~3 min
Parking 551 ft ~3 min
Convenience 7-Eleven 0.21 mi ~5 min
Restaurant Jack in the Box 0.24 mi ~5 min
Restaurant El Pollo Loco 0.24 mi ~5 min
1145 Avocado Boulevard, El Cajon 92020
Gas station Arco 0.27 mi ~6 min
Convenience 7-Eleven 0.29 mi ~6 min
Restaurant Subway 0.29 mi ~6 min
Transit 0.30 mi ~6 min
Coffee Starbucks 0.32 mi ~7 min
Pharmacy Rite Aid 0.32 mi ~7 min
Grocery North Park Produce 0.32 mi ~7 min
Transit 0.35 mi ~8 min
Grocery Salsa Market 0.35 mi ~7 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 |
|---|---|---|
| 260711 | CA | Health Information Technician primary |
This provider holds licence 260711 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 Technician, Health Information covers
Preferred term for an Accredited Record Technician who is an individual with an associate's degree from an accredited college or independent study program who is skilled in analyzing health information and in examination of medical records for accuracy, reporting of patient data for reimbursement, and creation of disease registries for researchers. NUCC Health Care Provider Taxonomy, code 247000000X
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 | 1003615295 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 10, 2025 |
| Last updated | Mar 10, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | RHIA |
| Practice address |
1216 WHITE OAK CT El Cajon, CA 92020 (408) 722-1913 |
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 | 6 | 1 | 5 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 1 | 1 | 2 | 9 |
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.