Raul Sergio Villarreal Jr., M.D.

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

License

S4411 Issued in TX

Practice address

11515 Toepperwein Rd Ste 201
Live Oak, TX 78233-3166

Phone

(210) 646-6978

Fax

(855) 919-4370

NPI assigned

Mar 28, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

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

Allergy/Immunology

Education

University of Texas Southwestern Medical School at Dallas, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Allergy Institute of San Antonio, P.a.Group PAC ID 9032252424, 4 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: raul.villarreal@allergysa.emadirect.md

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Allergy Institute of San Antonio, P.a.

  • Medical Specialty Clinic/Center
  • Live Oak, TX
  • NPI 1659524163
  Medicare reassignment Care Compare group NPD
• McGaw Medical Center of Northwestern University

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1861787939
  NPD (past)

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

{
    "created_epoch": "1427500800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758153600000",
    "number": "1083008908",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11515 TOEPPERWEIN RD STE 201",
            "city": "LIVE OAK",
            "state": "TX",
            "postal_code": "782333166",
            "telephone_number": "210-646-6978",
            "fax_number": "855-919-4370"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11515 TOEPPERWEIN RD STE 201",
            "city": "LIVE OAK",
            "state": "TX",
            "postal_code": "782333166",
            "telephone_number": "210-646-6978",
            "fax_number": "855-919-4370"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VILLARREAL",
        "first_name": "RAUL",
        "middle_name": "SERGIO",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-03-28",
        "last_updated": "2025-09-18",
        "certification_date": "2025-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RA0201X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Allergy & Immunology",
            "state": "TX",
            "license": "S4411",
            "primary": false
        },
        {
            "code": "207K00000X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology",
            "state": "TX",
            "license": "S4411",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tanya I Velasquez, LPC
• Roxanna Villa, LMSW
• Sidney Nicole Villa, APRN,FNP-BC
• Ricardo Dejesus Villafana, MD
• Village Oaks Pathology Services, P.a.
• Rhianna Villarreal
• Jesus Villasenor
• Virtuosa, PLLC
• Visionworks, Inc.
• Caliope Antonia Vlahos

• Allergy & Immunology Physician in Live Oak, TX
• Providers in Live Oak, TX by specialty
• Allergy & Immunology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 18, 2025; 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.