Gerardo Emmanuel Alcazar, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

T0989 Issued in TX

Practice address

5209 Burnet Rd Unit 200
Austin, TX 78756-2443

Phone

(512) 537-4898

Fax

(512) 254-6580

NPI assigned

May 14, 2013

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in NC, TX2 enrollments

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 2

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gerardo.alcazar.md@mmh-tx.direct.office.nextgen.com

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.

• Seton Family of Doctors

  • Neurological Surgery Physician
  • Austin, TX
  • NPI 1588997233

  Internal Medicine

  Medicare reassignment NPD
• Duke University Health System, Inc.

  dba Durham Regional Hospital

  • Internal Medicine Physician
  • Durham, NC
  • NPI 1376574798
  Medicare reassignment NPD
• Seton Family of Doctors

  dba Ascension Texas Imaging

  • Radiology Clinic/Center
  • Austin, TX
  • NPI 1275290694
  NPD
• Duke University Health System, Inc.

  dba Duke Home Infusion

  • Parenteral & Enteral Nutrition Supplies (DME)
  • Durham, NC
  • NPI 1427187525
  NPD

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

{
    "created_epoch": "1368489600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765497600000",
    "number": "1922444280",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5209 BURNET RD UNIT 200",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787562443",
            "telephone_number": "512-537-4898",
            "fax_number": "512-254-6580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5209 BURNET RD UNIT 200",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787562443",
            "telephone_number": "512-537-4898",
            "fax_number": "512-254-6580"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1120 E St SE",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200032232",
            "country_code": "US",
            "telephone_number": "512-537-4898",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2638 Jackson Ave Apt 30D",
            "address_purpose": "LOCATION",
            "city": "Long Island City",
            "state": "NY",
            "postal_code": "111011679",
            "country_code": "US",
            "telephone_number": "512-537-4898",
            "fax_number": "512-254-6580",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1275 N Harper Ave Apt 4",
            "address_purpose": "LOCATION",
            "city": "West Hollywood",
            "state": "CA",
            "postal_code": "900468439",
            "country_code": "US",
            "telephone_number": "832-388-4499",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALCAZAR",
        "first_name": "GERARDO",
        "middle_name": "EMMANUEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2013-05-14",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "204536",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "339801",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "DC",
            "license": "MD600004839",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "T0989",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jimmy Alcala, LCSW
• Alcalde Therapy
• Samantha Alcalde, LPC
• Aloura Alcantar, LMSW
• Alejandra Alcaraz
• Kameron Paige Alcedo
• Steven Jon Alchus, LCSW
• Angel Eduardo Alcocer, M.D.
• Alcohol Free LLC
• Amy Alcorn, MD

• 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 Dec 12, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.