Diane Walker, ARNP, CNM
Diane Walker, ARNP, CNM is an Obstetrics & Gynecology Nurse Practitioner in Seattle, WA, registered under NPI 1861614463. 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 1101 MADISON ST STE 950, Seattle, WA 98104. 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 |
|---|---|---|
| AP60421358 | WA | Obstetrics & Gynecology Nurse Practitioner primary |
| RN00090852 | WA | Registered Nurse |
| AP60421358 | WA | Advanced Practice Midwife |
This provider holds licence AP60421358 issued in WA. 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 - Certified Nurse Midwife (cnm)
- PAC ID
- 4880912120
- Enrollment ID
- I20150416000629
Medicare enrolment is recorded as approved under the provider type Practitioner - Certified Nurse Midwife (cnm). 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 Obstetrics & Gynecology covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LX0001X
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 | |
|---|---|---|---|---|
| 363LX0001X | Obstetrics & Gynecology Nurse Practitioner Obstetrics & Gynecology | AP60421358 | WA | primary |
| 163W00000X | Registered Nurse | RN00090852 | WA | |
| 367A00000X | Advanced Practice Midwife | AP60421358 | WA |
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 | 1861614463 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 3, 2007 |
| Last updated | Oct 23, 2020 |
| Status | Active |
| Sole proprietor | No |
| Credential | ARNP, CNM |
| Practice address |
1101 MADISON ST STE 950 Seattle, WA 98104 (206) 682-5800 |
| Mailing address |
805 MADISON ST STE 901 Seattle, WA 98104 |
| Other identifiers |
2042961
· Medicaid (WA) |
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 | 6 | 1 | 6 | 1 | 4 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 3 | 1 | 3 | 1 | 8 | 4 | 3 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.