Mazen Noureddin, M.D.
NPI 1205087087ActiveIndividual· Internal Medicine, Gastroenterology· Houston, TX
Internal Medicine, Gastroenterology (M.D.) with Houston Methodist Specialty Physicians and 1 other group, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $494,924 for 247 claims, against $39,546 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 18 companies reporting payments in 2025, $782,702 in all, mostly grants. Lists Houston Methodist Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1205087087 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 9, 2008 |
| Last updated in NPPES | Jun 25, 2024 |
| Certified by provider | Jun 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | T6659 | TX |
| Internal Medicine, Gastroenterology | 207RG0100X | A101301 | CA |
| Internal Medicine, Hepatology | 207RI0008X | T6659 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 340 across 21 procedure codes |
| Paid by Medicare | $39,546 |
Part D prescriptions in 2024
| Prescriptions (claims) | 247 · 322 30-day fills |
|---|---|
| Patients | 51 |
| Total drug cost | $494,924 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical groups
- Houston Methodist Specialty PhysiciansHouston, TX · 1,528 clinicians
- Houston Liver Institute IncHouston, TX · 2 clinicians
Hospital affiliations
- Houston Methodist HospitalHouston, TX
- Houston Methodist West HospitalHouston, TX
Industry payments (Open Payments)
- 2025$782,702 · 137 payments from 18 companies
- 2024$258,390 · 151 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $421,233 | 55 |
| Novo Nordisk As | $254,780 | 6 |
| Boehringer Ingelheim International Gmbh | $38,408 | 16 |
| Merck Sharp & Dohme LLC | $23,347 | 7 |
| Novo Nordisk Inc | $21,900 | 14 |
What the 2025 payments were for
- Grant$349,500 · 2 payments
- Acquisitions$225,150 · 1 payment
- Consulting Fee$121,680 · 25 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$43,468 · 12 payments
- Travel and Lodging$37,373 · 29 payments
- Food and Beverage$3,931 · 67 payments
- Honoraria$1,600 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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