Lillianne Michelle Villarreal, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

W3891 Issued in TX

Practice address

1500 Red River St
Austin, TX 78701-1918

Phone

(512) 324-7000

NPI assigned

Apr 10, 2023

Last updated

May 5, 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

Medicare fee-for-service enrollment

Enrolled in TX

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

University of Texas Medical Branch at Galveston, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1681084800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777939200000",
    "number": "1144915505",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1500 RED RIVER ST",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787011918",
            "telephone_number": "512-324-7000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 RED RIVER ST",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787011918",
            "telephone_number": "512-324-7000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VILLARREAL",
        "first_name": "LILLIANNE",
        "middle_name": "MICHELLE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-04-10",
        "last_updated": "2026-05-05",
        "certification_date": "2026-05-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "W3891",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Diana Villarreal, LCDC
• Dianna Villarreal, M.S., CHES, NBC-HWC
• Jacob Lee Villarreal
• Jasmine Villarreal
• Lauren Villarreal
• Monica Villarreal
• Patricia Villarreal, M.S.
• Rafael Villarreal IV, RMT
• Roberto Eduardo Villarreal, DO
• Roberto Luis Villarreal, D.D.S.

• Internal Medicine Physician in Austin, TX
• Providers in Austin, TX by specialty
• Internal Medicine Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 5, 2026; 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.