Active NPI
Elizabeth Poser-Guenther, RN
- School Registered Nurse
- Pewaukee, WI
National Provider Identifier
1477483733
On this page
Key facts
NPPES NPI Registry- Primary specialty
- School Registered Nurse
- License
- 258517-30
- Practice address
- 510 Lake St
Pewaukee, WI 53072-3631 - Phone
- (262) 701-5635
- NPI assigned
- May 20, 2026
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| School Registered Nurse | 163WS0200X | 258517-30 | WI | Primary |
Addresses
Primary practice location
510 Lake St
Pewaukee, WI 53072-3631
Mailing address
510 Lake St
Pewaukee, WI 53072-3631
Phone (262) 701-5635
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Registered Nurse
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 258517-30 | WI | MD | School Registered Nurse |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1779235200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1779235200000",
"number": "1477483733",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "510 LAKE ST",
"city": "PEWAUKEE",
"state": "WI",
"postal_code": "530723631",
"telephone_number": "262-701-5635"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "510 LAKE ST",
"city": "PEWAUKEE",
"state": "WI",
"postal_code": "530723631",
"telephone_number": "262-701-5635"
}
],
"practiceLocations": [],
"basic": {
"last_name": "POSER-GUENTHER",
"first_name": "ELIZABETH",
"credential": "RN",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-05-20",
"last_updated": "2026-05-20",
"certification_date": "2026-05-20",
"status": "A"
},
"taxonomies": [
{
"code": "163WS0200X",
"taxonomy_group": "",
"desc": "Registered Nurse, School",
"state": "WI",
"license": "258517-30",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Pewaukee, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.