William Danz, B.C.O.
William Danz, B.C.O. is a provider specialising in Prosthetic/Orthotic Supplier in San Francisco, CA, registered under NPI 1659424604. 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 490 POST ST STE. 1609, San Francisco, CA 94102. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Dme Supplier - Prosthetic Personnel
- PAC ID
- 9335266634
- Enrollment ID
- O20100930099287
Medicare enrolment is recorded as approved under the provider type Dme Supplier - Prosthetic Personnel. 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 Prosthetic/Orthotic Supplier covers
An organization that provides prosthetic and orthotic care which may include, but is not limited to, patient evaluation, prosthesis or orthosis design, fabrication, fitting and modification to treat limb loss for purposes of restoring physiological function and/or cosmesis or to treat a neuromusculoskeletal disorder or acquired condition. NUCC Health Care Provider Taxonomy, code 335E00000X
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 | 1659424604 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 20, 2007 |
| Last updated | Jun 6, 2008 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | B.C.O. |
| Practice address |
490 POST ST STE. 1609 San Francisco, CA 94102 (415) 433-3990 Fax (415) 986-0491 |
| Other identifiers |
ZZZ75342Z
· Medicaid (CA) CGP003405 · 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 | 6 | 5 | 9 | 4 | 2 | 4 | 6 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 1 | 9 | 8 | 2 | 8 | 6 | 0 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.