Tiannan Wang, M.D.
Tiannan Wang, M.D. is a Cytopathology Physician in Los Angeles, CA, registered under NPI 1003229329. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Los Angeles, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 759 ft away. There is EV charging 484 ft from the office — useful if you are driving in from out of town. The nearest transit stop is 360 ft away, served by LA-USC T4.
Getting here and what is nearby
Parking 161 ft ~1 min
Transit LA-USC T15 200 ft ~1 min
Transit LA-USC T3 324 ft ~2 min
Transit LA-USC T4 360 ft ~2 min
Restaurant Dunkin' 350 ft ~2 min
2200 East Trojan Way, Los Angeles 90033
Mo-Th 05:00-18:00; Fr 05:00-19:00; Sa 06:00-18:00; Su 06:00-16:00
EV charging 484 ft ~2 min
Parking 497 ft ~2 min
Hotel Hyatt House LA - University Medical Center 546 ft ~3 min
Restaurant Chipotle 533 ft ~3 min
Parking 759 ft ~3 min
Restaurant Panda Express 0.26 mi ~6 min
1969 Zonal Avenue, Los Angeles 90006
Mo-Fr 10:00-15:00
Gas station Chevron 0.41 mi ~9 min
Convenience 7-Eleven 0.43 mi ~9 min
Hotel Lincoln Park Motel 0.47 mi ~10 min
Hotel Lincoln Park Motel 0.47 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 |
|---|---|---|
| A149981 | CA | Anatomic Pathology & Clinical Pathology… |
| A149981 | CA | Cytopathology Physician primary |
This provider holds licence A149981 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 - Pathology
- PAC ID
- 6800124678
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Pennsylvania | I20190819002221 | Practitioner - Pathology |
| California | I20200513000950 | Practitioner - Pathology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Pathology. There are 2 separate enrolment records across 2 states (PA, CA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Cytopathology covers
A cytopathologist is an anatomic pathologist trained in the diagnosis of human disease by means of the study of cells obtained from body secretions and fluids, by scraping, washing, or sponging the surface of a lesion, or by the aspiration of a tumor mass or body organ with a fine needle. A major aspect of a cytopathologist's practice is the interpretation of Papanicolaou-stained smears of cells from the female reproductive systems, the "Pap" test. However, the cytopathologist's expertise is applied to the diagnosis of cells from all systems and areas of the body. He/she is a consultant to all medical specialists. NUCC Health Care Provider Taxonomy, code 207ZC0500X
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 | |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | A149981 | CA | |
| 207ZC0500X | Cytopathology Physician Cytopathology | A149981 | CA | primary |
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 | 1003229329 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 4, 2014 |
| Last updated | Aug 11, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.D. |
| Practice address |
1500 SAN PABLO ST RM 216 Los Angeles, CA 90033 (323) 442-2582 |
| Mailing address |
PO BOX 31309 Los Angeles, CA 90031 |
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 | 2 | 9 | 3 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 9 | 3 | 4 |
Sum = 51 · next multiple of 10 = 60 · 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.