Fayez G. Seif, MD
NPI 1861591604ActiveIndividual· Internal Medicine, Gastroenterology· Mesquite, TX
Internal Medicine, Gastroenterology (MD) with Texas Digestive Disease Consultants, PLLC, practicing in Mesquite, Texas. Their prescriptions cost Medicare Part D more than their services did: $390,896 for 2,119 claims, against $143,950 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $1,375 in all, mostly food and beverage. Lists Baylor Scott and White Medical Center Sunnyvale and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1861591604 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2006 |
| Last updated in NPPES | May 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | K1055 | 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 | 459 |
|---|---|
| Services billed | 2,568 across 47 procedure codes |
| Paid by Medicare | $143,950 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,119 · 2,941 30-day fills |
|---|---|
| Patients | 1,157 |
| Total drug cost | $390,896 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Texas Digestive Disease Consultants, PLLCFlower Mound, TX · 608 clinicians
Hospital affiliations
- Baylor Scott and White Medical Center SunnyvaleSunnyvale, TX
- Baylor University Medical CenterDallas, TX
- Hunt Regional Medical CenterGreenville, TX
- Medical Center of McKinneyMcKinney, TX
- Texas Health Presbyterian Hospital RockwallRockwall, TX
Industry payments (Open Payments)
- 2025$1,375 · 55 payments from 11 companies
- 2024$947.88 · 50 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $424.64 | 21 |
| Janssen Biotech, Inc. | $325.84 | 11 |
| Gilead Sciences, Inc. | $201.61 | 8 |
| Ardelyx, Inc. | $104.35 | 4 |
| Genzyme Corporation | $75.79 | 2 |
What the 2025 payments were for
- Food and Beverage$1,291 · 54 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Mesquite
- 1578724803
- 1902191455
- 1932208758
- 1518066372
- 1750326369
- 1114944840
- 1942685409