Nadia Haj-Ismail

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

R9975 Issued in TX

Practice address

5656 Kelley St
Houston, TX 77026-1967

Phone

(713) 566-4489

NPI assigned

Apr 9, 2017

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

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

General PracticeAlso: Internal Medicine

Education

University of Texas Medical School at Houston, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Ut PhysiciansGroup PAC ID 8426960360, 1,744 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Harris Health Hospital, Houston, TX, CCN 450289

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

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.

• Ut Physicians

  • Anesthesiology Physician
  • Houston, TX
  • NPI 1033157821

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Baylor College of Medicine

  • Ph.D. Medical Genetics
  • Houston, TX
  • NPI 1881026664

  Internal Medicine

  Medicare reassignment NPD
• Baylor College of Medicine

  • Orthopaedic Surgery Physician
  • Sugar Land, TX
  • NPI 1700683844
  NPD
• Ut Physicians

  • Health Educator
  • Houston, TX
  • NPI 1316534472
  NPD
• Harris County Hospital District

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1205900370
  NPD (past)

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

• Harris County Hospital District

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1205900370
  Care Compare affiliation

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

{
    "created_epoch": "1491696000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758067200000",
    "number": "1043743727",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5656 KELLEY ST # 4BI70001",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770261967",
            "telephone_number": "713-566-4489",
            "fax_number": "713-566-5025"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5656 KELLEY ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770261967",
            "telephone_number": "713-566-4489"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6501 Fannin St Ste Nc100",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770302703",
            "country_code": "US",
            "telephone_number": "713-798-2222",
            "fax_number": "713-798-0111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAJ-ISMAIL",
        "first_name": "NADIA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-09",
        "last_updated": "2025-09-17",
        "certification_date": "2025-09-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "TX",
            "license": "R9975",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "R9975",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amy B Hair, MD
• Clark D Hair, MD
• Hairoholic LLC
• Jennifer Hairston, MPT
• Latashia Hairston, MAT ATC LAT
• Magda Haj, MD
• Mona Ali Haj, MD
• Brandie Dawn Hajdasz, AGACNP-BC
• Anne-Marie Pierre Hajjar, M.D.
• Joud Hajjar, M.D.

• Internal Medicine Physician in Houston, TX
• Providers in Houston, 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 Sep 17, 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.