ALAN C. WESTEREN, M.D., INC.
ALAN C. WESTEREN, M.D., INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1902880867, based in San Diego, CA. It is classified under Ophthalmology Physician.
Getting there
The practice address on file is 16486 BERNARDO CENTER DR STE C-150 ALAN C WESTEREN MD INC/EXPERTVISIONCAREMEDGRP, San Diego, CA 92128. 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 |
|---|---|---|
| G79738 | CA | Ophthalmology Physician primary |
This provider holds licence G79738 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3072594589
- Enrollment ID
- O20041005000298
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Ophthalmology covers
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses. NUCC Health Care Provider Taxonomy, code 207W00000X
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 | 1902880867 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 5, 2005 |
| Last updated | Oct 21, 2009 |
| Status | Active |
| Practice address |
16486 BERNARDO CENTER DR STE C-150 ALAN C WESTEREN MD INC/EXPERTVISIONCAREMEDGRP San Diego, CA 92128 (858) 673-2277 Fax (858) 451-3733 |
| Mailing address |
4629 CASS ST #59 ALAN WESTEREN MD/EXPERT VISION CARE MEDICAL GROUP San Diego, CA 92109 |
| Other identifiers |
00G797380
· Medicaid (CA) P00131150 · Other (CA) W18008A · Other (CA) W18008 · Other (CA) W18008B · Other (CA) |
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 | 9 | 0 | 2 | 8 | 8 | 0 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 0 | 2 | 7 | 8 | 0 | 8 | 3 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
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.