Jeffrey Fluck, LCSW 139421

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

LCSW139421 Issued in CA

Practice address

239 W 9TH St
Upland, CA 91786-5979

Phone

(909) 981-6121

NPI assigned

Oct 24, 2019

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• G & C Swan Inc

  • Substance Abuse Rehabilitation Facility
  • Upland, CA
  • NPI 1659662351
  NPD
• His House New Creation Treatment Center

  • Addiction (Substance Use Disorder) Counselor
  • Upland, CA
  • NPI 1376371187
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1571875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782518400000",
    "number": "1851934673",
    "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",
            "telephone_number": "909-981-6121"
        },
        {
            "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": "909-981-6121"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FLUCK",
        "first_name": "JEFFREY",
        "credential": "LCSW 139421",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-10-24",
        "last_updated": "2026-06-27",
        "certification_date": "2026-06-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "LCSW139421",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Renee Denise Flanagan, M.A.
• Veronica Fletes
• Flor Y Siendo Individual and Family Therapy, Professional Corporation
• Hope J Flores, AMFT
• Jimmy Flores
• Kylie Fohring
• Foothill Hospice
• Foothill Hospice Care Inc
• Foothills Psychological Services, Inc.
• Footsteps Into Health, Inc,

• Clinical Social Worker in Upland, CA
• Providers in Upland, CA by specialty
• Clinical Social Worker in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 27, 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.

Verify at the official NPI Registry.