Demi Tran
Demi Tran is a Neurology Physician in Orange, CA, registered under NPI 1003235219.
Getting there
Here is what surrounds this office in Orange, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.41 mi away. There is EV charging 0.36 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.24 mi away, served by Chapman-The City. If you arrive early, there is a coffee shop 0.38 mi away.
Getting here and what is nearby
Parking 295 ft ~2 min
Parking 349 ft ~2 min
Restaurant WaBa Grill 510 ft ~2 min
3070 West Chapman Avenue, Orange 92868
Restaurant Pita Grill 510 ft ~2 min
3070 West Chapman Avenue, Orange 92868
Mo-Fr 10:30-20:00; Sa 11:00-18:00; Su off
Restaurant Tacos La Calle 512 ft ~2 min
3070 West Chapman Avenue, Orange 92868
Su-Th 11:00-21:00; Fr,Sa 11:00-22:00
Transit Chapman-Renaissance 741 ft ~3 min
Coffee Kelly's Coffee 758 ft ~3 min
Transit Chapman-Renaissance 775 ft ~3 min
Transit Chapman-The City 0.24 mi ~5 min
Hotel Hotel Fera Anaheim, a DoubleTree by Hilton Hotel 0.30 mi ~6 min
Hotel ALO Hotel 0.33 mi ~7 min
Hotel Ayres Hotel Orange 0.34 mi ~7 min
EV charging 0.36 mi ~8 min
Coffee Starbucks 0.38 mi ~8 min
3743 West Chapman Avenue, Orange 92868
Mo-Th 04:00-22:00; Fr 04:00-23:30; Sa 04:00-00:00; Su 05:00-22:30
Parking 0.41 mi ~9 min
333 South Anita Drive, Orange 92868
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 |
|---|---|---|
| 141357 | CA | Neurology Physician primary |
This provider holds licence 141357 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 Neurology covers
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures. NUCC Health Care Provider Taxonomy, code 2084N0400X
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 | 1003235219 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 15, 2014 |
| Last updated | Jan 25, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
101 THE CITY DR S CITY TOWER, SUITE 400 Orange, CA 92868 (171) 456-6693 |
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 | 2 | 3 | 5 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 1 | 2 | 2 |
Sum = 41 · next multiple of 10 = 50 · 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.