Joanne Carruth
Joanne Carruth is a provider specialising in Mastectomy Fitter in Los Altos, CA, registered under NPI 1104654177. 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 1564 MIRAMONTE AVE STE A, Los Altos, CA 94024. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Mastectomy Fitter covers
An individual trained in the fitting and adjusting of breast prostheses and management of post-mastectomy prostheses services. NUCC Health Care Provider Taxonomy, code 224900000X
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 | 1104654177 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 22, 2024 |
| Last updated | Jul 22, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Practice address |
1564 MIRAMONTE AVE STE A Los Altos, CA 94024 (650) 917-1771 Fax (650) 917-1551 |
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 | 0 | 4 | 6 | 5 | 4 | 1 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 0 | 4 | 3 | 5 | 8 | 1 | 5 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.