Marc Seftel, MD
Marc Seftel, MD is an Otolaryngic Allergy Physician in Santa Cruz, CA, registered under NPI 1457307761. This provider registers 5 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 550 WATER ST STE A, Santa Cruz, CA 95060. 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 |
|---|---|---|
| A44368 | CA | Otolaryngic Allergy Physician primary |
| A44368 | CA | Specialist |
| A44368 | CA | Pediatric Otolaryngology Physician |
| A44368 | CA | Sleep Medicine (Otolaryngology) Physician |
| A44368 | CA | Otology & Neurotology Physician |
This provider holds licence A44368 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 - Otolaryngology
- PAC ID
- 1557365475
- Enrollment ID
- I20080717000286
Medicare enrolment is recorded as approved under the provider type Practitioner - Otolaryngology. 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 Otolaryngic Allergy covers
An otolaryngologist who specializes in the diagnosis and treatment of otolaryngic allergies and other allergic diseases. NUCC Health Care Provider Taxonomy, code 207YX0602X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207YX0602X | Otolaryngic Allergy Physician Otolaryngic Allergy | A44368 | CA | primary |
| 174400000X | Specialist | A44368 | CA | |
| 207YP0228X | Pediatric Otolaryngology Physician Pediatric Otolaryngology | A44368 | CA | |
| 207YS0012X | Sleep Medicine (Otolaryngology) Physician Sleep Medicine | A44368 | CA | |
| 207YX0901X | Otology & Neurotology Physician Otology & Neurotology | A44368 | 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 | 1457307761 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 26, 2006 |
| Last updated | Jan 25, 2018 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
550 WATER ST STE A Santa Cruz, CA 95060 (831) 476-4414 Fax (831) 476-0264 |
| Other identifiers |
00A443680
· 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 | 4 | 5 | 7 | 3 | 0 | 7 | 7 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 6 | 0 | 5 | 7 | 3 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.