Nadia Haj-Ismail
Internal Medicine Physician · Houston, TX
Nadia Haj-Ismail is an internal medicine physician with a practice address in Houston, Texas, and NPI 1043743727, issued on Apr 9, 2017. Check the license (Texas R9975, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nadia Haj-Ismail
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R9975 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5656 Kelley St, Houston, TX 77026
- Phone
- (713) 566-4489
- Enumerated
- Apr 9, 2017
- Record last updated
- Sep 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20210809000032); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 5656 Kelley St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Grace Akwari, FNPFamily Nurse Practitioner1326454794
- Joy Aladume, PHARM. DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1629323159
- Rebekah AmadiFamily Nurse Practitioner1437072667
Verify Nadia Haj-Ismail in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R9975Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
77 Medicare Part D claims for 21 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- UT PhysiciansHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nadia Haj-Ismail among 9,175 internal medicine physician records in Texas
Nadia Haj-Ismail 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 2017, is newer than 77% of them.
- NPI issued2017 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 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 →
The 8 internal medicine physician records with the nearest ZIP codes
- Gabriel Aisenberg, M.D.Houston, TX 770261003965377
- Modushudan Bhattacharjee, M.D.Houston, TX 770261215961446
- Derek Dawes, M.D.Houston, TX 770261508012725
- Sarah Duong, MDHouston, TX 770261689920274
- Rukma Govindu, MDHouston, TX 770261124238191
- Miguel Izquierdo, M.D.Houston, TX 770261376796680
- Sean Kendrick, MDHouston, TX 770261255750329
- Kalyani Koduri, M.D.Houston, TX 770261982634200
Common questions
What is Nadia Haj-Ismail's NPI number?
Nadia Haj-Ismail's National Provider Identifier (NPI) is 1043743727, issued on Apr 9, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nadia Haj-Ismail located?
The NPPES record lists a practice address at 5656 Kelley St, Houston, TX, 77026. Phone: (713) 566-4489. Providers update this record themselves, so call before visiting.
How can I verify Nadia Haj-Ismail's license?
NPPES lists Texas license number R9975, 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 Nadia Haj-Ismail prescribe under Medicare Part D?
In 2024, Nadia Haj-Ismail had 77 Medicare Part D claims for 21 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nadia Haj-Ismail's MIPS final score?
The 2023 MIPS final score is 82.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.