Michelle Sierra

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

112058 Issued in CA

Practice address

29780 Reservoir Ave
Nuevo, CA 92567

Phone

(951) 928-3836

NPI assigned

Aug 17, 2021

Last updated

Feb 23, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Michelle Contreras Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1629158400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771804800000",
    "number": "1851067177",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 633",
            "city": "GARDEN GROVE",
            "state": "CA",
            "postal_code": "928420633"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "29780 RESERVOIR AVE",
            "city": "NUEVO",
            "state": "CA",
            "postal_code": "92567",
            "telephone_number": "951-928-3836"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIERRA",
        "first_name": "MICHELLE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-08-17",
        "last_updated": "2026-02-23",
        "certification_date": "2026-02-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "112058",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MICHELLE",
            "last_name": "CONTRERAS",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

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• Clinical Social Worker in Nuevo, CA
• Providers in Nuevo, 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 Feb 23, 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.