Mark Volpicelli, M.D.
Mark Volpicelli, M.D. is an Ophthalmology Physician in Torrance, CA, registered under NPI 1083786636. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1000 W CARSON ST, Torrance, CA 90502. 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 |
|---|---|---|
| G59030 | CA | Ophthalmology Physician primary |
| G59030 | CA | Family Medicine Physician |
| G59030 | CA | Obesity Medicine (Internal Medicine)… |
| G59030 | CA | General Practice Physician |
This provider holds licence G59030 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 - Ophthalmology
- PAC ID
- 5395766679
- Enrollment ID
- I20100909000950
Medicare enrolment is recorded as approved under the provider type Practitioner - Ophthalmology. 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
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 | |
|---|---|---|---|---|
| 207W00000X | Ophthalmology Physician | G59030 | CA | primary |
| 207Q00000X | Family Medicine Physician | G59030 | CA | |
| 207RB0002X | Obesity Medicine (Internal Medicine) Physician Obesity Medicine | G59030 | CA | |
| 208D00000X | General Practice Physician | G59030 | 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 | 1083786636 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 15, 2006 |
| Last updated | Aug 1, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
1000 W CARSON ST Torrance, CA 90502 (310) 222-2345 |
| Mailing address |
904 SILVER SPUR RD SUITE 497 Rolling Hills Estates, CA 90274 |
| Other identifiers |
00G590300
· Medicaid (CA) 180013421 · Other |
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 | 8 | 3 | 7 | 8 | 6 | 6 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 7 | 3 | 5 | 8 | 3 | 6 | 6 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.