William Hoffman, MD
William Hoffman, MD is a Plastic Surgery Physician in San Francisco, CA, registered under NPI 1659339422. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 350 PARNASSUS AVE, San Francisco, CA 94143. 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 |
|---|---|---|
| G38023 | CA | Plastic Surgery Physician primary |
| G38023 | CA | Surgery Physician |
This provider holds licence G38023 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 - Plastic And Reconstructive Surgery
- PAC ID
- 9335224963
- Enrollment ID
- I20080306000708
Medicare enrolment is recorded as approved under the provider type Practitioner - Plastic And Reconstructive Surgery. 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 Plastic Surgery covers
A plastic surgeon deals with the repair, reconstruction or replacement of physical defects of form or function involving the skin, musculoskeletal system, craniomaxillofacial structures, hand, extremities, breast and trunk and external genitalia or cosmetic enhancement of these areas of the body. Cosmetic surgery is an essential component of plastic surgery. The plastic surgeon uses cosmetic surgical principles to both improve overall appearance and to optimize the outcome of reconstructive procedures. The surgeon uses aesthetic surgical principles not only to improve undesirable qualities of normal structures but in all reconstructive procedures as well. NUCC Health Care Provider Taxonomy, code 208200000X
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 | |
|---|---|---|---|---|
| 208200000X | Plastic Surgery Physician | G38023 | CA | primary |
| 208600000X | Surgery Physician | G38023 | 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 | 1659339422 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 2, 2006 |
| Last updated | Jun 6, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
350 PARNASSUS AVE San Francisco, CA 94143 (415) 353-4287 Fax (415) 353-4330 |
| Mailing address |
1635 DIVISADERO STREET, SUITE 625, BOX 1821 San Francisco, CA 94143 |
| Other identifiers |
0G3802300
· Medicaid (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 | 6 | 5 | 9 | 3 | 3 | 9 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 1 | 9 | 6 | 3 | 9 | 4 | 4 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.