Active NPI
John C Rossing, PSYD
- Clinical Psychologist
- Saint Louis, MO
National Provider Identifier
1881537397
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 2025019679
- Practice address
- 1 Jefferson Barracks Dr
Saint Louis, MO 63125-4181 - Phone
- (314) 652-4100
- NPI assigned
- Apr 10, 2026
- 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 Psychologist | 103TC0700X | 2025019679 | MO | Primary |
Addresses
Primary practice location
1 Jefferson Barracks Dr
Saint Louis, MO 63125-4181
Mailing address
4405 W Pine Blvd Apt 412
Saint Louis, MO 63108-2310
Phone (224) 321-3396
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 |
|---|---|---|---|
| 2025019679 | MO | MD | Clinical Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775779200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1775779200000",
"number": "1881537397",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4405 W PINE BLVD APT 412",
"city": "SAINT LOUIS",
"state": "MO",
"postal_code": "631082310",
"telephone_number": "224-321-3396"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1 JEFFERSON BARRACKS DR",
"city": "SAINT LOUIS",
"state": "MO",
"postal_code": "631254181",
"telephone_number": "314-652-4100"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ROSSING",
"first_name": "JOHN",
"middle_name": "C",
"credential": "PSYD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-04-10",
"last_updated": "2026-04-10",
"certification_date": "2026-04-10",
"status": "A"
},
"taxonomies": [
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "MO",
"license": "2025019679",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Saint Louis, MO
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 10, 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.