Marcia Blank, AU.D.
Marcia Blank, AU.D. is a provider specialising in Audiologist-Hearing Aid Fitter in Gardena, CA, registered under NPI 1962570051. 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 1300 W 155TH ST 107, Gardena, CA 90247. 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 |
|---|---|---|
| AU751 | CA | Audiologist-Hearing Aid Fitter primary |
| HA1505 | CA | Audiologist-Hearing Aid Fitter |
This provider holds licence AU751 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 - Qualified Audiologist
- PAC ID
- 3779522073
- Enrollment ID
- I20050426001469
Medicare enrolment is recorded as approved under the provider type Practitioner - Qualified Audiologist. 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 Audiologist-Hearing Aid Fitter covers
An audiologist/hearing aid fitter is the professional who specializes in evaluating and treating people with hearing loss, conducts a wide variety of tests to determine the exact nature of an individual's hearing problem, presents a variety of treatment options to patients, dispenses and fits hearing aids, administers tests of balance to evaluate dizziness and provides hearing rehabilitation training. This classification should be used where individuals are licensed as "audiologist-hearing aid fitters" as opposed to states that license individuals as "audiologists". NUCC Health Care Provider Taxonomy, code 237600000X
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 | |
|---|---|---|---|---|
| 237600000X | Audiologist-Hearing Aid Fitter | AU751 | CA | primary |
| 237600000X | Audiologist-Hearing Aid Fitter | HA1505 | 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 | 1962570051 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 30, 2006 |
| Last updated | Sep 20, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | AU.D. |
| Practice address |
1300 W 155TH ST 107 Gardena, CA 90247 (310) 327-5001 Fax (310) 327-2349 |
| Mailing address |
1300 W 155TH ST STE 107 Gardena, CA 90247 |
| Other identifiers |
AU0007510
· Other AUD751B · Other HA0015051 · Medicaid (CA) AU0007510 · Medicaid (CA) AU0007511 · Other HA0015050 · Other |
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 | 9 | 6 | 2 | 5 | 7 | 0 | 0 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 3 | 2 | 1 | 7 | 0 | 0 | 1 |
Sum = 49 · next multiple of 10 = 50 · 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.