Joan L Helfenstein, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

LI9449 Issued in CA

Practice address

566 S San Vicente Blvd Ste 103
Los Angeles, CA 90048-4650

Phone

(310) 278-8211

Fax

(323) 939-9213

NPI assigned

Apr 2, 2007

Sex

Female

Sole proprietor

Yes

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

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 1978

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

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.

• Leah Ellenberg, PH.D. and Associates

  • Clinical Neuropsychologist
  • Beverly Hills, CA
  • NPI 1518287804
  NPD (past)

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

{
    "created_epoch": "1175472000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1942321740",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 N MCCADDEN PL",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900041022",
            "telephone_number": "310-278-8211",
            "fax_number": "323-939-9213"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "566 S SAN VICENTE BLVD STE 103",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900484650",
            "telephone_number": "310-278-8211",
            "fax_number": "323-939-9213"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HELFENSTEIN",
        "first_name": "JOAN",
        "middle_name": "L",
        "name_prefix": "Ms.",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-04-02",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "LI9449",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nathaniel Adam Heldt, MD, PHD
• Helen Davey PHD Inc
• Helen H. Kang, M.D., a Professional Medical Corporation
• Helen L. Tan, RPH, Inc
• Elana Helfand
• Rebekka Mia Helford, M.A.
• Nicholas Andrew Helgager, AMFT
• Katherine Helgerson
• Amanda Helguera, B.S.
• Helix Hearing Care (California) Inc

• Clinical Social Worker in Los Angeles, CA
• Providers in Los Angeles, 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 Sep 3, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.