John Siebenlist, M.D.
John Siebenlist, M.D. is a Procedural Dermatology Physician in San Luis Obispo, CA, registered under NPI 1164476909. 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 1551 BISHOP ST SUITE 220, San Luis Obispo, CA 93401. 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 |
|---|---|---|
| A61826 | CA | Procedural Dermatology Physician primary |
| A61826 | CA | MOHS-Micrographic Surgery Physician |
This provider holds licence A61826 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 - Dermatology
- PAC ID
- 2062593510
- Enrollment ID
- I20080122000832
Medicare enrolment is recorded as approved under the provider type Practitioner - Dermatology. 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 Procedural Dermatology covers
Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers). NUCC Health Care Provider Taxonomy, code 207NS0135X
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 | |
|---|---|---|---|---|
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | A61826 | CA | primary |
| 207ND0101X | MOHS-Micrographic Surgery Physician MOHS-Micrographic Surgery | A61826 | 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 | 1164476909 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 19, 2006 |
| Last updated | Mar 16, 2016 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
1551 BISHOP ST SUITE 220 San Luis Obispo, CA 93401 (805) 541-0668 Fax (805) 541-8213 |
| Mailing address |
2285 CORPORATE CIR STE 200 Henderson, NV 89074 |
| Other identifiers |
P00146047
· 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 | 1 | 6 | 4 | 4 | 7 | 6 | 9 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 3 | 4 | 8 | 7 | 3 | 9 | 0 |
Sum = 61 · next multiple of 10 = 70 · 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.