Active NPI
Justin James Frieders, D.C.
- Chiropractor
- Pleasant Hill, CA
National Provider Identifier
1033100102
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Chiropractor
- License
- DC-28372
- Practice address
- 3333 Vincent Rd
Suite 101
Pleasant Hill, CA 94523-4309 - Phone
- (925) 946-9355
- Fax
- (925) 946-9377
- NPI assigned
- Oct 28, 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 |
|---|---|---|---|---|
| Chiropractor | 111N00000X | DC-28372 | CA | Primary |
Addresses
Primary practice location
3333 Vincent Rd
Suite 101
Pleasant Hill, CA 94523-4309
Mailing address
1761 Carmel Dr
Unit 101
Walnut Creek, CA 94596-4275
Phone (925) 952-4734
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 |
|---|---|---|---|
| 28372 | CA | MD | Clinical Psychologist |
| DC-28372 | CA | MD | Chiropractor |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130457600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1033100102",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1761 CARMEL DR",
"address_2": "UNIT 101",
"city": "WALNUT CREEK",
"state": "CA",
"postal_code": "945964275",
"telephone_number": "925-952-4734"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3333 VINCENT RD",
"address_2": "SUITE 101",
"city": "PLEASANT HILL",
"state": "CA",
"postal_code": "945234309",
"telephone_number": "925-946-9355",
"fax_number": "925-946-9377"
}
],
"practiceLocations": [],
"basic": {
"last_name": "FRIEDERS",
"first_name": "JUSTIN",
"middle_name": "JAMES",
"name_prefix": "Dr.",
"credential": "D.C.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-28",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "111N00000X",
"taxonomy_group": "",
"desc": "Chiropractor",
"state": "CA",
"license": "DC-28372",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Pleasant Hill, CA
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.