Ning Sun, FNP-BC
Ning Sun, FNP-BC is a Family Nurse Practitioner in Tustin, CA, registered under NPI 1003340977.
Getting there
Here is what surrounds this office in Tustin, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 0.49 mi away. There is EV charging 171 ft from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.27 mi away, served by Walnut-Cherrywood.
Getting here and what is nearby
EV charging Tesla Supercharger 171 ft ~1 min
Transit Walnut-Franklin 589 ft ~3 min
Transit Walnut-Franklin 645 ft ~3 min
Restaurant Cafe America & Hookah Lounge 0.20 mi ~4 min
Transit Walnut-Cherrywood 0.27 mi ~6 min
Parking Auto Dealer Vehicle Parking 0.41 mi ~9 min
Restaurant Noah’s NY Bagels 0.45 mi ~10 min
15020 Kensington Park Drive, Tustin 92782
Mo-Fr 05:00-14:00; Sa-Su 08:00-14:00
Restaurant Ootoro Bar 0.47 mi ~10 min
15020 Kensington Park Drive, Tustin
Tu,Th 11:30-14:00,17:30-21:30; Fr-Sa 11:30-14:00,17:30-22:30
Parking 0.48 mi ~10 min
Parking 0.49 mi ~10 min
Grocery Stater Bros. 0.52 mi ~11 min
15150 Kensington Park Drive, Tustin 92782
Mo-Su 06:00-23:00
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 |
|---|---|---|
| 95021590 | CA | Family Nurse Practitioner primary |
This provider holds licence 95021590 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 - Nurse Practitioner
- PAC ID
- 0749557536
- Enrollment ID
- I20170526001163
Medicare enrolment is recorded as approved under the provider type Practitioner - 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 | 1003340977 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 17, 2017 |
| Last updated | Mar 10, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | FNP-BC |
| Practice address |
2492 WALNUT AVE STE 100 Tustin, CA 92780 (714) 709-8000 Fax (714) 709-8080 |
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 | 3 | 4 | 0 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 4 | 0 | 9 | 5 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.