Carmen Yung, FNP-BC
Carmen Yung, FNP-BC is a Nurse Practitioner in Walnut Creek, CA, registered under NPI 1003475450. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 Walnut Creek, based on OpenStreetMap data collected Sep 29, 2026. Parking is available about 936 ft away. There is EV charging 0.49 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 864 ft away, served by Ygnacio Valley Road & Marchbanks Drive. If you arrive early, there is a coffee shop 0.46 mi away.
Getting here and what is nearby
Transit Ygnacio Valley Road & Kinross Drive 133 ft ~1 min
Parking Employee Parking Only 552 ft ~3 min
Transit John Muir Medical Center Walnut Creek 738 ft ~3 min
Parking 730 ft ~3 min
Transit Ygnacio Valley Road & Marchbanks Drive 864 ft ~4 min
Parking 936 ft ~4 min
Gas station Chevron 0.45 mi ~10 min
Coffee T4 Tea For U 0.46 mi ~10 min
Restaurant Subway 0.46 mi ~10 min
1815 Ygnacio Valley Road, Walnut Creek 94598
07:00-20:00
Restaurant The Breakfast Club at Midtown 0.46 mi ~10 min
Restaurant Mooyah 0.47 mi ~10 min
Mo-Su 11:00-22:00
Convenience ExtraMile 0.48 mi ~10 min
EV charging Tesla Supercharger 0.49 mi ~10 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 |
|---|---|---|
| NP95012996 | CA | Nurse Practitioner primary |
| 95012996 | CA | Family Nurse Practitioner |
This provider holds licence NP95012996 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
- 0345673729
- Enrollment ID
- I20201209001471
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 Nurse Practitioner covers
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners. NUCC Health Care Provider Taxonomy, code 363L00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 363L00000X | Nurse Practitioner | NP95012996 | CA | primary |
| 363LF0000X | Family Nurse Practitioner Family | 95012996 | CA |
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 | 1003475450 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 10, 2019 |
| Last updated | May 9, 2022 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | FNP-BC |
| Practice address |
1479 YGNACIO VALLEY RD STE 150 Walnut Creek, CA 94598 (925) 296-7340 |
| Mailing address |
1450 TREAT BLVD STE 300 Walnut Creek, CA 94597 |
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 | 7 | 5 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 7 | 1 | 4 | 1 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.