Crystal Williamson, REGISTERED NURSE
Crystal Williamson, REGISTERED NURSE is a Case Management Registered Nurse in Fort Wainwright, AK, registered under NPI 1346073962. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1060 GAFFNEY RD, Fort Wainwright, AK 99703. 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 |
|---|---|---|
| 158409 | AK | Case Management Registered Nurse primary |
| 158409 | AK | Registered Nurse |
| 158409 | AK | Inpatient Obstetric Registered Nurse |
This provider holds licence 158409 issued in AK. 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 Case Management covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WC0400X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WC0400X | Case Management Registered Nurse Case Management | 158409 | AK | primary |
| 163W00000X | Registered Nurse | 158409 | AK | |
| 163WX0003X | Inpatient Obstetric Registered Nurse Obstetric, Inpatient | 158409 | AK |
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 | 1346073962 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 20, 2024 |
| Last updated | Aug 20, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | REGISTERED NURSE |
| Practice address |
1060 GAFFNEY RD Fort Wainwright, AK 99703 (907) 353-3105 |
| Mailing address |
PO BOX 35629 Fort Wainwright, AK 99703 |
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 | 3 | 4 | 6 | 0 | 7 | 3 | 9 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 8 | 6 | 0 | 7 | 6 | 9 | 3 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.