Individual provider Active NPI

Elia Cesar El Hajj, MD, PHD

  • Internal Medicine Physician
  • Houston, TX
National Provider Identifier
1679276752
Registry record updated Jul 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
W3791 Issued in TX
Practice address
6550 Fannin St
Houston, TX 77030-2717
Phone
(713) 790-3311
NPI assigned
Mar 27, 2023
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 24, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X W3791 TX Primary

Addresses

Primary practice location

6550 Fannin St
Houston, TX 77030-2717

Mailing address

4101 Greenbriar Dr Ste 122G
Houston, TX 77098-5266

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
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.

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Louisiana State University School of Medicine in New Orleans, 2023
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

1415 N Loop W
Suite 240
Houston, TX 77008-1677

4101 Greenbriar Dr
Suite 122G
Houston, TX 77098-5297

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine, Doctor of Philosophy

Interoperability endpoints

  • Direct secure messaging: eelhajj451431@directhoustonmethodist.org

NPI Registry JSON

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

{
    "created_epoch": "1679875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784851200000",
    "number": "1679276752",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4101 GREENBRIAR DR STE 122G",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770985266"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6550 FANNIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302717",
            "telephone_number": "713-790-3311"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "EL HAJJ",
        "first_name": "ELIA",
        "middle_name": "CESAR",
        "credential": "MD, PHD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-03-27",
        "last_updated": "2026-07-24",
        "certification_date": "2026-07-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "W3791",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.