Jonathan Pham, OD
Jonathan Pham, OD is a provider specialising in Low Vision Rehabilitation Optometrist in San Francisco, CA, registered under NPI 1750045720. 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 4150 CLEMENT STREET EYE CLINIC, San Francisco, CA 94121. 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 |
|---|---|---|
| 39474 | CA | Low Vision Rehabilitation Optometrist primary |
This provider holds licence 39474 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 - Optometry
- PAC ID
- 9133512890
- Enrollment ID
- I20251021002471
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. 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 Low Vision Rehabilitation covers
Optometrists who specialize in low-vision care having training to assess visual function, prescribe low-vision devices, develop treatment plans, and recommend other vision rehabilitation services. NUCC Health Care Provider Taxonomy, code 152WL0500X
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 | 1750045720 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 26, 2021 |
| Last updated | Oct 26, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | OD |
| Practice address |
4150 CLEMENT STREET EYE CLINIC San Francisco, CA 94121 (410) 221-4810 |
| Mailing address |
3333 CLEMENT ST APT 5 San Francisco, CA 94121 |
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 | 7 | 5 | 0 | 0 | 4 | 5 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 1 | 0 | 0 | 4 | 1 | 7 | 4 |
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.