Lilliam A Sierra, M.D.

Primary specialty

Developmental - Behavioral Pediatrics PhysicianTaxonomy code 2080P0006X

License

MD00024390 Issued in WA

Practice address

7301 W Deschutes Ave
Suite a
Kennewick, WA 99336-7757

Phone

(509) 374-1962

Fax

(509) 374-0572

NPI assigned

Jul 26, 2005

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 identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1122336000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1275533838",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7301 W DESCHUTES AVE",
            "address_2": "SUITE A",
            "city": "KENNEWICK",
            "state": "WA",
            "postal_code": "993367757",
            "telephone_number": "509-374-1962",
            "fax_number": "509-374-0572"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7301 W DESCHUTES AVE",
            "address_2": "SUITE A",
            "city": "KENNEWICK",
            "state": "WA",
            "postal_code": "993367757",
            "telephone_number": "509-374-1962",
            "fax_number": "509-374-0572"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIERRA",
        "first_name": "LILLIAM",
        "middle_name": "A",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-07-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0006X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Developmental - Behavioral Pediatrics",
            "state": "WA",
            "license": "MD00024390",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1089663",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Mandi Beth Shultz, RN
• Terry Kelly Shultz, P.T.
• Oliver Noah Journey Ro Siah
• Glenn Siekawitch
• Peter K Sien, MD
• Ruben Daniel Sierra, MD
• Sulianett Sierra
• Jordan Sifuentes
• Abigail Sigmon
• Jennifer Silva-Gutierrez

• Developmental - Behavioral Pediatrics Physician in Kennewick, WA
• Providers in Kennewick, WA by specialty
• Developmental - Behavioral Pediatrics Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.