Individual provider Active NPI

Erin O'Brien, LMFT

  • Marriage & Family Therapist
  • Los Angeles, CA
National Provider Identifier
1023990744
Registry record updated Apr 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Marriage & Family TherapistTaxonomy code 106H00000X
License
155231 Issued in CA
Practice address
1019 Gayley Ave FL 2
Los Angeles, CA 90024-3437
Phone
(855) 501-1004
NPI assigned
Jul 23, 2025
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 29, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Marriage & Family Therapist 106H00000X 155231 CA Primary

Addresses

Primary practice location

1019 Gayley Ave FL 2
Los Angeles, CA 90024-3437

Mailing address

3835 N Freeway Blvd Ste 100
Sacramento, CA 95834-1954

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

State licenses

LicenseStateTypeSpecialty
155231CAMDMarriage & Family Therapist

NPI Registry JSON

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

{
    "created_epoch": "1753228800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777420800000",
    "number": "1023990744",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3835 N FREEWAY BLVD STE 100",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958341954"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1019 GAYLEY AVE FL 2",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900243437",
            "telephone_number": "855-501-1004"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "ERIN",
        "credential": "LMFT",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-07-23",
        "last_updated": "2026-04-29",
        "certification_date": "2026-04-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "155231",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Los Angeles, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 29, 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.