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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ELIA CESAR EL HAJJ MD, PHD
NPI 1679276752
Internal Medicine in Houston, TX

Active since March 27, 2023PECOS Enrolled
6550 FANNIN ST, HOUSTON, TX 77030(713) 790-3311 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 24, 2026, Mar 27, 2023 (2 updates tracked since 2023).

About Elia Cesar El Hajj Md, Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ELIA CESAR EL HAJJ MD, PHD (NPI 1679276752) is an individual internal medicine provider in Houston, Texas, licensed in Texas (W3791) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679276752
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameELIA CESAR EL HAJJCredential: MD, PHD
Location Address6550 FANNIN STHouston, TX 77030-2717
Mailing Address4101 Greenbriar Dr Ste 122gHouston, TX 77098-5266
Phone(713) 790-3311
Sole ProprietorYes
Enumeration DateMarch 27, 2023
Last NPPES UpdateJuly 24, 20262 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1679276752 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · W3791
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
6550 FANNIN ST, Houston, TX 77030
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Elia Cesar El Hajj Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MEGAN MCCLANAHAN
Student in an Organized Health Care Education/Training Program
6550 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 441-5155
MARIANNE CARLSON PSYD
Psychologist (Clinical)
6550 FANNIN ST
HOUSTON, TX 77030
Harris County (346) 248-2040
MARIE MCLAIN P.A.
Physician Assistant
6550 FANNIN ST, SMITH TOWER, SUITE 1901
HOUSTON, TX 77030
Harris County (713) 441-1100
DALIA MOGHAZY MD
Obstetrics & Gynecology
6550 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 790-3311
YVONNE I-FANG CHU M.D.
Ophthalmology
6550 FANNIN ST, SUITE 1501
HOUSTON, TX 77030
Harris County (713) 798-6100
DR. SAM JERRY LONG D.D.S.
Dentist (General Practice)
6550 FANNIN ST, STE 2103
HOUSTON, TX 77030
Harris County (713) 797-0846
THOMAS W KNIGHT MD
Internal Medicine
6550 FANNIN ST, SMITH 1101
HOUSTON, TX 77030
Harris County (713) 441-0006
DR. JOOHI JIMENEZ-SHAHED M.D.
Psychiatry & Neurology (Neurology)
6550 FANNIN ST, SUITE 1801
HOUSTON, TX 77030
Harris County (713) 798-5975

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Elia El Hajj's NPI number?

The NPI number for Elia El Hajj is 1679276752. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Elia El Hajj located?

Elia El Hajj practices at 6550 Fannin St, Houston, TX 77030. The listed phone number is (713) 790-3311.

What is Elia El Hajj's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Elia El Hajj enrolled in Medicare?

Yes. Elia El Hajj is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Elia El Hajj was last updated on July 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.