Lisa Marie Siewert, LCGC

Primary specialty

Genetic Counselor (M.S.)Taxonomy code 170300000X

License

GC002041 Issued in CA

Practice address

605 E Huntington Dr Ste 209
Monrovia, CA 91016-6353

Phone

(800) 426-6467

NPI assigned

May 25, 2026

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

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": "1779667200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779667200000",
    "number": "1649101254",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "605 E HUNTINGTON DR STE 209",
            "city": "MONROVIA",
            "state": "CA",
            "postal_code": "910166353"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "605 E HUNTINGTON DR STE 209",
            "city": "MONROVIA",
            "state": "CA",
            "postal_code": "910166353",
            "telephone_number": "800-426-6467"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEWERT",
        "first_name": "LISA",
        "middle_name": "MARIE",
        "credential": "LCGC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-05-25",
        "last_updated": "2026-05-25",
        "certification_date": "2026-05-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "170300000X",
            "taxonomy_group": "",
            "desc": "Genetic Counselor, MS",
            "state": "CA",
            "license": "GC002041",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jack Siegfried
• Omar Sierra-Favela
• Chloie Sierra
• Joe Sierra
• Viviana Sierra
• Andre Sifuentes
• Marco Sifuentes
• Maria Sifuentes
• Bahiya Sigafoes
• Ishan Sikander

• Genetic Counselor (M.S.) in Monrovia, CA
• Providers in Monrovia, CA by specialty
• Genetic Counselor (M.S.) in California

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

Verify at the official NPI Registry.