Dennis Poon
Dennis Poon is a Family Nurse Practitioner in Sylmar, CA, registered under NPI 1003439365. 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 Sylmar, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 323 ft away at Parking Lot D. The nearest transit stop is 626 ft away, served by Olive View / Kennedy.
Getting here and what is nearby
Transit Kennedy / UCLA Medical Center (Layover) 7 ft ~1 min
Transit Kennedy / UCLA Medical Center (Layover) 92 ft ~1 min
Parking Parking Lot I 83 ft ~1 min
Parking 304 ft ~2 min
Parking Parking Lot D 323 ft ~2 min
Transit Olive View / Kennedy 626 ft ~3 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 |
|---|---|---|
| NP95008131 | CA | Family Nurse Practitioner primary |
This provider holds licence NP95008131 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
- Order And Referring Only - Nurse Practitioner
- PAC ID
- 4284178419
- Enrollment ID
- I20240628002553
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Nurse Practitioner. 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 Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1003439365 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 21, 2020 |
| Last updated | May 10, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
14445 OLIVE VIEW DR Sylmar, CA 91342 (747) 210-3000 |
| Mailing address |
451 E ADA AVE Glendora, CA 91741 |
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 | 4 | 3 | 9 | 3 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 3 | 9 | 3 | 3 |
Sum = 55 · next multiple of 10 = 60 · 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.