TOSO OPTICAL CO
TOSO OPTICAL CO is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003012105, based in San Rafael, CA. The organization lists 2 taxonomy classifications, with Eyewear Supplier recorded as primary.
Getting there
The practice address on file is 1526 5TH AVE, San Rafael, CA 94901. 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 |
|---|---|---|
| RDO D6926 | CA | Eyewear Supplier primary |
| RDO D6926 | CA | Optician |
This provider holds licence RDO D6926 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 Eyewear Supplier covers
An organization that provides spectacles, contact lenses, and other vision enhancement devices prescribed by an optometrist or ophthalmologist. NUCC Health Care Provider Taxonomy, code 332H00000X
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 | |
|---|---|---|---|---|
| 332H00000X | Eyewear Supplier | RDO D6926 | CA | primary |
| 156FX1800X | Optician Optician | RDO D6926 | 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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003012105 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 25, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
1526 5TH AVE San Rafael, CA 94901 (415) 457-9410 Fax (415) 457-9488 |
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 | 0 | 1 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 4 | 1 | 0 |
Sum = 35 · next multiple of 10 = 40 · check digit = 5 · actual last digit = 5
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.