Mohammad Tarek Al-Assi, M.D.
NPI 1578554333ActiveIndividual· Internal Medicine, Gastroenterology· Arlington, TX
Internal Medicine, Gastroenterology (M.D.) with Texas Digestive Disease Consultants, PLLC, practicing in Arlington, Texas. Their prescriptions cost Medicare Part D more than their services did: $233,755 for 2,078 claims, against $92,401 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $542.21 in all, mostly food and beverage. Lists Texas Health Arlington Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1578554333 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 2, 2005 |
| Last updated in NPPES | May 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | J4684 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 292 |
|---|---|
| Services billed | 2,196 across 40 procedure codes |
| Paid by Medicare | $92,401 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,078 · 3,568 30-day fills |
|---|---|
| Patients | 421 |
| Total drug cost | $233,755 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Texas Digestive Disease Consultants, PLLCFlower Mound, TX · 608 clinicians
Hospital affiliation
- Texas Health Arlington Memorial HospitalArlington, TX
Industry payments (Open Payments)
- 2025$542.21 · 27 payments from 10 companies
- 2024$686.01 · 36 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $112.29 | 5 |
| Janssen Biotech, Inc. | $69.92 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $67.72 | 3 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $59.47 | 3 |
| Lilly USA, LLC | $57.66 | 3 |
What the 2025 payments were for
- Food and Beverage$542.21 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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