NPPES file of Aug 9, 2026

Ali Hassan Harb, M.D.

Gastroenterology Physician · Waxahachie, TX

Ali Hassan Harb, M.D. is a gastroenterology physician with a practice address in Waxahachie, Texas, and NPI 1588084867, issued on Apr 24, 2014. Check the license (Texas T8220, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588084867
Name
Ali Hassan Harb
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
T8220 TX
01078090A IN
Self-reported in NPPES; status is on the state search
Practice location
2400 N Interstate 35 E RD, Waxahachie, TX 75165
Phone
(469) 843-4000
Enumerated
Apr 24, 2014
Record last updated
Apr 30, 2024
Medicare enrollment
Enrolled (PECOS I20221121000027); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2400 N Interstate 35 E RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Obianuju AkoOccupational Therapist1790641967
  2. Justina CollumAcute Care Nurse Practitioner1700546769
  3. Eun Grace Kim, DOInternal Medicine Physician1821739624
  4. David Nguyen, DOPhysical Medicine & Rehabilitation Physician1336881531
  5. Keira NguyenEmergency Medicine Pharmacist1154278745
  6. Derek Pham, PT, DPTPhysical Therapist1356267082

Verify Ali Hassan Harb in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license T8220
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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48% more Medicare Part D claims than the average gastroenterology physician in 2024

1,200 Medicare Part D claims for 543 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.

  1. Ali Harb1,200
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium308 claims
  2. Gavilyte-G255 claims
  3. Peg-3350 And Electrolytes158 claims
  4. Omeprazole114 claims
  5. Linzess75 claims
  6. Famotidine64 claims

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.

Industry payments in 2024: $456.70

20 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ali Harb$456.70
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Healthtexas Provider NetworkWaxahachie, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ali Hassan Harb among 1,478 gastroenterology physician records in Texas

Ali Hassan Harb, M.D. is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.

  • NPI issued2014 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2013 · median 2003 among the 1,175 with a school on file
  • Record last updated2024 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Texas

There are 1,478 gastroenterology physician records in Texas.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Ramalinga Kedika, M.D.Mesquite, TX 751501578724803
  2. Farbod Masrour, D.O,Mesquite, TX 751501902191455
  3. German Oliver, MDMesquite, TX 751501518066372
  4. Fayez Seif, MDMesquite, TX 751501861591604
  5. Paul Wright, MDMesquite, TX 751501932208758
  6. Syed Oqail, M.DMesquite, TX 751491750326369
  7. Charles McDaniel, DOSunnyvale, TX 751821497250377
  8. Connor Griffin, MDDallas, TX 752031376077818

Common questions

What is Ali Hassan Harb, M.D.'s NPI number?

Ali Hassan Harb, M.D.'s National Provider Identifier (NPI) is 1588084867, issued on Apr 24, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Ali Hassan Harb, M.D. located?

The NPPES record lists a practice address at 2400 N Interstate 35 E RD, Waxahachie, TX, 75165. Phone: (469) 843-4000. Providers update this record themselves, so call before visiting.

How can I verify Ali Hassan Harb, M.D.'s license?

NPPES lists Texas license number T8220, 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 Ali Hassan Harb, M.D. prescribe under Medicare Part D?

In 2024, Ali Hassan Harb, M.D. had 1,200 Medicare Part D claims for 543 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.