Linjun Zhang
Linjun Zhang is a provider specialising in Clinical Social Worker in Irvine, CA, registered under NPI 1003709858.
Getting there
Here is what surrounds this office in Irvine, based on OpenStreetMap data collected Oct 19, 2026. Parking is available about 581 ft away. There is EV charging 0.28 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 0.31 mi away. A pharmacy sits 659 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.31 mi away.
Getting here and what is nearby
Convenience ExtraMile 448 ft ~2 min
6320 Irvine Boulevard, Irvine 92620
Gas station Chevron 438 ft ~2 min
6320 Irvine Boulevard, Irvine 92620
Parking 449 ft ~2 min
Restaurant Carl's Jr. 479 ft ~2 min
Parking 532 ft ~3 min
Parking 581 ft ~3 min
Pharmacy Walgreens 659 ft ~3 min
Coffee Starbucks 967 ft ~4 min
6364 Irvine Boulevard, Woodbury Town Center 92620
Restaurant The Flame Broiler 1,011 ft ~4 min
6368 Irvine Boulevard, Irvine 92620
Restaurant Panera Bread 0.20 mi ~4 min
6372 Irvine Boulevard, Irvine 92620
Mo-Sa 06:00-21:00; Su 07:00-20:00
Grocery Ralphs 0.20 mi ~4 min
6300 Irvine Boulevard, Irvine 92620
Mo-Su 05:00-01:00
Transit 0.25 mi ~5 min
Transit 0.26 mi ~6 min
EV charging ChargePoint 0.28 mi ~6 min
Transit 0.31 mi ~7 min
Coffee CUP by Blue Hummingbird Coffee 0.31 mi ~7 min
385 Novel, Irvine 92618
Mo-Fr 07:00-14:00; Sa-Su 07:00-16:00
Grocery Trader Joe's 0.31 mi ~7 min
6222 Irvine Boulevard, Irvine 92620
Mo-Su 09:00-21:00
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 |
|---|---|---|
| 120319 | CA | Clinical Social Worker primary |
This provider holds licence 120319 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 Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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 | 1003709858 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 30, 2025 |
| Last updated | May 30, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
105 CALYPSO Irvine, CA 92618 (949) 533-9073 |
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 | 7 | 0 | 9 | 8 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 0 | 9 | 8 | 1 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.