Active NPI
Sandra Lee Mittelsteadt, LPC
- Professional Counselor
- Appleton, WI
National Provider Identifier
1104096189
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Professional Counselor
- License
- 4398-125
- Practice address
- 4321 W College Ave Ste 200
Appleton, WI 54914-3968 - Phone
- (920) 358-0118
- NPI assigned
- Mar 6, 2008
- Sex
- Female
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Professional Counselor | 101YP2500X | 4398-125 | WI | Primary |
Addresses
Primary practice location
4321 W College Ave Ste 200
Appleton, WI 54914-3968
Mailing address
1155 Esther Ann LN
Hortonville, WI 54944-2402
Phone (715) 281-2610
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4398-125 | WI | MD | Professional Counselor |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| New Leaf 25 Counseling Services | Mental Health | Current | Accepting new patients |
| Thedacare, Incorporated | Past | Accepting new patients | |
| Sherman Counseling Management, S.C. | Past | Accepting new patients |
Locations
4321 W College Ave
Ste 200
Appleton, WI 54914
Phone (920) 519-2920
Organizations & group practices 3
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Mental Health Counselor
- Appleton, WI
- NPI 1386575074
-
- Psychologist
- Appleton, WI
- NPI 1235251349
-
- Family Medicine Physician
- New London, WI
- NPI 1376656959
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1204761600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778976000000",
"number": "1104096189",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1155 ESTHER ANN LN",
"city": "HORTONVILLE",
"state": "WI",
"postal_code": "549442402",
"telephone_number": "715-281-2610"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4321 W COLLEGE AVE STE 200",
"city": "APPLETON",
"state": "WI",
"postal_code": "549143968",
"telephone_number": "920-358-0118"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MITTELSTEADT",
"first_name": "SANDRA",
"middle_name": "LEE",
"credential": "LPC",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2008-03-06",
"last_updated": "2026-05-17",
"certification_date": "2026-05-17",
"status": "A"
},
"taxonomies": [
{
"code": "101YP2500X",
"taxonomy_group": "",
"desc": "Counselor, Professional",
"state": "WI",
"license": "4398-125",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Appleton, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 17, 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.