Active NPI
Jeffrey J. Marx, MA
- Professional Counselor
- Saint Louis, MO
National Provider Identifier
1154214435
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Professional Counselor
- Practice address
- 9666 Olive Blvd
Saint Louis, MO 63132-3013 - Phone
- (636) 323-9979
- NPI assigned
- Jun 3, 2025
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Professional Counselor | 101YP2500X | Primary | ||
| Marriage & Family Therapist | 106H00000X |
Addresses
Primary practice location
9666 Olive Blvd
Saint Louis, MO 63132-3013
Mailing address
851 Clubhouse Dr
Ballwin, MO 63011-2854
Phone (636) 323-9979
Other practice location 1
8240 Saint Charles Rock Rd
Saint Louis, MO 63114-4508
Phone (314) 427-3755 ext. 450
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
- Master of Arts
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1748908800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1748908800000",
"number": "1154214435",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "851 CLUBHOUSE DR",
"city": "BALLWIN",
"state": "MO",
"postal_code": "630112854",
"telephone_number": "636-323-9979"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "9666 OLIVE BLVD",
"city": "SAINT LOUIS",
"state": "MO",
"postal_code": "631323013",
"telephone_number": "636-323-9979"
}
],
"practiceLocations": [
{
"address_1": "8240 Saint Charles Rock Rd",
"address_purpose": "LOCATION",
"city": "Saint Louis",
"state": "MO",
"postal_code": "631144508",
"country_code": "US",
"telephone_number": "314-427-3755 x450",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MARX",
"first_name": "JEFFREY",
"middle_name": "J.",
"credential": "MA",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2025-06-03",
"last_updated": "2025-06-03",
"certification_date": "2025-06-03",
"status": "A"
},
"taxonomies": [
{
"code": "101YP2500X",
"taxonomy_group": "",
"desc": "Counselor, Professional",
"state": null,
"license": null,
"primary": true
},
{
"code": "106H00000X",
"taxonomy_group": "",
"desc": "Marriage & Family Therapist",
"state": null,
"license": null,
"primary": false
}
],
"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 Jun 3, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.