Active NPI
John Mueller
- Addiction (Substance Use Disorder) Counselor
- Upland, CA
National Provider Identifier
1831015759
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Addiction (Substance Use Disorder) Counselor
- License
- RT1423561225
- Practice address
- 239 W 9TH St
Upland, CA 91786-5979 - Phone
- (909) 490-6283
- NPI assigned
- Jun 25, 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 |
|---|---|---|---|---|
| Addiction (Substance Use Disorder) Counselor | 101YA0400X | RT1423561225 | CA | Primary |
Addresses
Primary practice location
239 W 9TH St
Upland, CA 91786-5979
Mailing address
239 W 9TH St
Upland, CA 91786-5979
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
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1782345600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1782345600000",
"number": "1831015759",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "239 W 9TH ST",
"city": "UPLAND",
"state": "CA",
"postal_code": "917865979"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "239 W 9TH ST",
"city": "UPLAND",
"state": "CA",
"postal_code": "917865979",
"telephone_number": "909-490-6283"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MUELLER",
"first_name": "JOHN",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-06-25",
"last_updated": "2026-06-25",
"certification_date": "2026-06-25",
"status": "A"
},
"taxonomies": [
{
"code": "101YA0400X",
"taxonomy_group": "",
"desc": "Counselor, Addiction (Substance Use Disorder)",
"state": "CA",
"license": "RT1423561225",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Upland, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 25, 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.