William Tanner, M.D.
William Tanner, M.D. is a Body Imaging Physician in Walnut Creek, CA, registered under NPI 1457383929.
Getting there
The practice address on file is 2125 OAK GROVE RD STE 200, Walnut Creek, CA 94598. 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 |
|---|---|---|
| A63125 | CA | Body Imaging Physician primary |
This provider holds licence A63125 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 - Diagnostic Radiology
- PAC ID
- 5799759478
- Enrollment ID
- I20040819001617
Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. 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 Body Imaging covers
A Radiology doctor of Osteopathy that specializes in Body Imaging. NUCC Health Care Provider Taxonomy, code 2085B0100X
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 | 1457383929 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 7, 2006 |
| Last updated | Dec 20, 2021 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
2125 OAK GROVE RD STE 200 Walnut Creek, CA 94598 (925) 296-7150 |
| Mailing address |
2152 CLINTON AVE APT C Alameda, CA 94501 |
| Other identifiers |
00A631250
· Medicaid (CA) P00360941 · Other 00A631250 · 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 | 4 | 5 | 7 | 3 | 8 | 3 | 9 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 6 | 8 | 6 | 9 | 4 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.