Active NPI
Charles Horstmeier, LCSW
- Clinical Social Worker
- Saint Peters, MO
National Provider Identifier
1083613657
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 000521
- Practice address
- 4200 Cloverleaf Drive
Suite J- K
Saint Peters, MO 63376 - Phone
- (636) 928-5109
- Fax
- (636) 447-4678
- NPI assigned
- Jul 18, 2005
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 000521 | MO | Primary |
Addresses
Primary practice location
4200 Cloverleaf Drive
Suite J- K
Saint Peters, MO 63376
Mailing address
5000 Cedar Plaza Parkway
Ste 350
Saint Louis, MO 63128-3441
Phone (314) 843-4333
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)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 000521 | MO | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1121644800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1083613657",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5000 CEDAR PLAZA PARKWAY",
"address_2": "STE 350",
"city": "SAINT LOUIS",
"state": "MO",
"postal_code": "631283441",
"telephone_number": "314-843-4333",
"fax_number": "314-843-4856"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4200 CLOVERLEAF DRIVE",
"address_2": "SUITE J- K",
"city": "SAINT PETERS",
"state": "MO",
"postal_code": "63376",
"telephone_number": "636-928-5109",
"fax_number": "636-447-4678"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HORSTMEIER",
"first_name": "CHARLES",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-07-18",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MO",
"license": "000521",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Saint Peters, MO
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.