Elizabeth Armstrong, PMHNP-BC
Elizabeth Armstrong, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner in Madison, WI, registered under NPI 1780033431. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 2810 CROSSROADS DR STE 4000, Madison, WI 53718. 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 |
|---|---|---|
| 9713-33 | WI | Psychiatric/Mental Health Nurse… primary |
| 174010-30 | WI | Registered Nurse |
| 174010-30 | WI | Psychiatric/Mental Health Registered Nurse |
| 9713-33 | WI | Nurse Practitioner |
| 174010-30 | WI | Nurse Practitioner |
This provider holds licence 9713-33 issued in WI. 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 - Nurse Practitioner
- PAC ID
- 6507287620
- Enrollment ID
- I20200528000763
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. 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 Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0808X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 363LP0808X | Psychiatric/Mental Health Nurse Practitioner Psychiatric/Mental Health | 9713-33 | WI | primary |
| 163W00000X | Registered Nurse | 174010-30 | WI | |
| 163WP0808X | Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health | 174010-30 | WI | |
| 363L00000X | Nurse Practitioner | 9713-33 | WI | |
| 363L00000X | Nurse Practitioner | 174010-30 | WI |
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 | 1780033431 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 3, 2016 |
| Last updated | Sep 20, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | PMHNP-BC |
| Practice address |
2810 CROSSROADS DR STE 4000 Madison, WI 53718 (855) 300-9893 Fax (855) 300-9893 |
| Mailing address |
883 CHANDLER LN Sun Prairie, WI 53590 |
| Other identifiers |
100095159
· Medicaid (WI) 100126024 · Medicaid (WI) 100094421 · Medicaid (WI) |
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 | 7 | 8 | 0 | 0 | 3 | 3 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 7 | 0 | 0 | 3 | 6 | 4 | 6 |
Sum = 59 · next multiple of 10 = 60 · 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.