Claire Ducker, MA CCC SLP
Claire Ducker, MA CCC SLP is a Speech/Language/Hearing Specialist/Technologist in Austin, TX, registered under NPI 1871654491. 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 CENTRAL TEXAS SPEECH PATHOLOGY SERVICES 2525 WALLINGWOOD BLDG 2, Austin, TX 78746. 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 |
|---|---|---|
| 011696 | TX | Speech/Language/Hearing… primary |
| 011696 | TX | Speech-Language Pathologist |
This provider holds licence 011696 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Specialist/Technologist covers
General classification identifying individuals who are trained on a specific piece of equipment or technical procedure. NUCC Health Care Provider Taxonomy, code 235500000X
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 | |
|---|---|---|---|---|
| 235500000X | Speech/Language/Hearing Specialist/Technologist | 011696 | TX | primary |
| 235Z00000X | Speech-Language Pathologist | 011696 | TX |
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 | 1871654491 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 13, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MA CCC SLP |
| Practice address |
CENTRAL TEXAS SPEECH PATHOLOGY SERVICES 2525 WALLINGWOOD BLDG 2 Austin, TX 78746 (512) 327-6175 Fax (512) 327-1545 |
| Mailing address |
5112 LANSING DRIVE Austin, TX 78745 |
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 | 8 | 7 | 1 | 6 | 5 | 4 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 3 | 5 | 8 | 4 | 9 |
Sum = 69 · next multiple of 10 = 70 · 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.