Chih-hui Tsai, D.P.M.
Chih-hui Tsai, D.P.M. is a provider specialising in Foot & Ankle Surgery Podiatrist in Montclair, CA, registered under NPI 1417271743. This provider registers 4 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
The practice address on file is 4950 SAN BERNARDINO ST STE 209, Montclair, CA 91763. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| E4872 | CA | Foot & Ankle Surgery Podiatrist primary |
| E4872 | CA | Podiatrist |
| E4872 | CA | Primary Podiatric Medicine Podiatrist |
| E4872 | CA | Sports Medicine Podiatrist |
This provider holds licence E4872 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 - Podiatry
- PAC ID
- 2264629443
Enrolled in Medicare 2 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| California | I20101214000861 | Practitioner - Podiatry |
| California | O20141124002238 | Dme Supplier - Physician - Podiatry |
Medicare enrolment is recorded as approved under the provider type Practitioner - Podiatry. There are 2 separate enrolment records. 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 Foot & Ankle Surgery covers
Definition to come... NUCC Health Care Provider Taxonomy, code 213ES0103X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 213ES0103X | Foot & Ankle Surgery Podiatrist Foot & Ankle Surgery | E4872 | CA | primary |
| 213E00000X | Podiatrist | E4872 | CA | |
| 213EP1101X | Primary Podiatric Medicine Podiatrist Primary Podiatric Medicine | E4872 | CA | |
| 213ES0000X | Sports Medicine Podiatrist Sports Medicine | E4872 | 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 | 1417271743 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 15, 2010 |
| Last updated | Aug 24, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | D.P.M. |
| Practice address |
4950 SAN BERNARDINO ST STE 209 Montclair, CA 91763 (909) 500-4060 Fax (909) 738-0688 |
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 | 4 | 1 | 7 | 2 | 7 | 1 | 7 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 2 | 7 | 4 | 7 | 2 | 7 | 8 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
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.