NPIMap

Individual provider Active NPI

Nghia Duy Nguyen, DO

  • Gastroenterology Physician
  • Harlingen, TX
National Provider Identifier
1538725890
Registry record updated Dec 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
V6658 Issued in TX
Practice address
512 Victoria LN Ste 2
Harlingen, TX 78550-3227
Phone
(956) 365-4400
Fax
(956) 365-4111
NPI assigned
May 13, 2019
Last updated
Dec 4, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 4, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X V6658 TX Primary

Addresses

Primary practice location

512 Victoria LN Ste 2
Harlingen, TX 78550-3227

Mailing address

512 Victoria LN Ste 2
Harlingen, TX 78550-3227
Phone (956) 365-4400

Other practice location 1

4211 N Jackson Rd
McAllen, TX 78504-6907
Phone (956) 365-4400

Other practice location 2

305 Lorenaly Dr
Brownsville, TX 78526-4333
Phone (956) 365-4400

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250506002285 TX Practitioner - Gastroenterology 4486013125 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
University of North Texas HSC, College of Osteopathic Med, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Gastroenterology Consultants of South Texas, PLLCGroup PAC ID 3274624937, 42 clinicians

Practice addresses (Care Compare)

4211 N Jackson Rd
McAllen, TX 78504-6907
Phone (956) 365-4400

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy11
Upper gastrointestinal (GI) endoscopy for acid reflux14

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

Practice roles

OrganizationSpecialtyStatusNew patients
Gastroenterology Consultants of South Texas, PLLC Gastroenterology CurrentSince Dec 1, 2025 Accepting new patients
Cardiovascular Care Providers, Inc. Past Accepting new patients

Locations

305 Lorenaly Dr
Brownsville, TX 78526

512 Victoria Ln
Ste 2
Harlingen, TX 78550
Phone 95636544003003

4211 N Jackson Rd
McAllen, TX 78504

Interoperability endpoints

  • Direct secure messaging: nnguyen650541@directhoustonmethodist.org

Organizations & group practices 2

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

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1557705600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764806400000",
    "number": "1538725890",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "512 VICTORIA LN STE 2",
            "city": "HARLINGEN",
            "state": "TX",
            "postal_code": "785503227",
            "telephone_number": "956-365-4400",
            "fax_number": "956-365-4111"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "512 VICTORIA LN STE 2",
            "city": "HARLINGEN",
            "state": "TX",
            "postal_code": "785503227",
            "telephone_number": "956-365-4400",
            "fax_number": "956-365-4111"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4211 N Jackson Rd",
            "address_purpose": "LOCATION",
            "city": "McAllen",
            "state": "TX",
            "postal_code": "785046907",
            "country_code": "US",
            "telephone_number": "956-365-4400",
            "fax_number": "956-365-4111",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "305 Lorenaly Dr",
            "address_purpose": "LOCATION",
            "city": "Brownsville",
            "state": "TX",
            "postal_code": "785264333",
            "country_code": "US",
            "telephone_number": "956-365-4400",
            "fax_number": "956-365-4111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "NGHIA",
        "middle_name": "DUY",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-05-13",
        "last_updated": "2025-12-04",
        "certification_date": "2025-12-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TX",
            "license": "V6658",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Harlingen, TX

Sources for this page

Verify at the official NPI Registry.