Christine Yim, O.D.
Christine Yim, O.D. is a provider specialising in Optometrist in San Rafael, CA, registered under NPI 1003265588.
Getting there
Here is what surrounds this office in San Rafael, based on OpenStreetMap data collected Sep 15, 2026. Parking is available about 655 ft away. There is EV charging 0.49 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.25 mi away, served by Civic Center Drive & McInnis Parkway. A pharmacy sits 0.47 mi from the entrance (Walgreens), which helps if you leave with a prescription.
Getting here and what is nearby
Parking 425 ft ~2 min
Parking 449 ft ~2 min
Parking 655 ft ~3 min
Transit Northgate Mall 972 ft ~4 min
Transit Northgate Mall 0.20 mi ~4 min
Pharmacy Rite Aid 0.23 mi ~5 min
Transit Civic Center Drive & McInnis Parkway 0.25 mi ~5 min
Restaurant Subway 0.26 mi ~6 min
4050 Redwood Highway, San Rafael 94903
08:30-21:30
Convenience Shell 0.33 mi ~7 min
Hotel Embassy Suites by Hilton San Rafael Marin County 0.33 mi ~7 min
Convenience Valero 0.34 mi ~7 min
Gas station Shell 0.34 mi ~7 min
Gas station Valero 0.34 mi ~7 min
Restaurant BJ's 0.34 mi ~7 min
closed
Restaurant Chipotle 0.34 mi ~7 min
Gas station 76 0.38 mi ~8 min
Convenience Chevron 0.39 mi ~8 min
Pharmacy Walgreens 0.47 mi ~10 min
EV charging 0.49 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 |
|---|---|---|
| 33421TLG | CA | Optometrist primary |
This provider holds licence 33421TLG 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
- 9335423912
- Enrollment ID
- I20170227000999
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 Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
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 | 1003265588 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 6, 2016 |
| Last updated | Mar 29, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | O.D. |
| Practice address |
4000 CIVIC CENTER DR STE 200A San Rafael, CA 94903 (415) 519-6582 |
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 | 6 | 5 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 6 | 1 | 5 | 7 |
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.