Elia Cesar El Hajj, MD, PHD
Internal Medicine Physician · Houston, TX
Elia Cesar El Hajj, MD, PHD is an internal medicine physician with a practice address in Houston, Texas, and NPI 1679276752, issued on Mar 27, 2023. Check the license (Texas W3791, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Elia Cesar El Hajj
- Credential
- MD, PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- W3791 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6550 Fannin St, Houston, TX 77030
- Phone
- (713) 790-3311
- Enumerated
- Mar 27, 2023
- Record last updated
- Jul 24, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elia Cesar El Hajj in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license W3791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
99 Medicare Part D claims for 40 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Elia Cesar El Hajj among 9,175 internal medicine physician records in Texas
Elia Cesar El Hajj, MD, PHD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 95% of them.
- NPI issued2023 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
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Common questions
What is Elia Cesar El Hajj, MD, PHD's NPI number?
Elia Cesar El Hajj, MD, PHD's National Provider Identifier (NPI) is 1679276752, issued on Mar 27, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Elia Cesar El Hajj, MD, PHD located?
The NPPES record lists a practice address at 6550 Fannin St, Houston, TX, 77030. Phone: (713) 790-3311. Providers update this record themselves, so call before visiting.
How can I verify Elia Cesar El Hajj, MD, PHD's license?
NPPES lists Texas license number W3791, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Elia Cesar El Hajj, MD, PHD prescribe under Medicare Part D?
In 2024, Elia Cesar El Hajj, MD, PHD had 99 Medicare Part D claims for 40 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.