Abdul Haq Khan, M.D.
NPI 1922129774ActiveIndividual· Internal Medicine, Gastroenterology· Shenandoah, TX
Internal Medicine, Gastroenterology (M.D.) with Tmh Physician Associates PLLC and 1 other group, practicing in Shenandoah, Texas. Their prescriptions cost Medicare Part D more than their services did: $221,727 for 697 claims, against $118,483 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 10 companies reporting payments in 2025, $1,619 in all, mostly food and beverage. Lists Houston Methodist the Woodlands Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1922129774 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 2, 2007 |
| Last updated in NPPES | Apr 5, 2022 |
| Certified by provider | Apr 5, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | T3113 | TX |
| Internal Medicine, Gastroenterology | 207RG0100X | 52028-20 | WI |
| Internal Medicine, Gastroenterology | 207RG0100X | 45722 | CO |
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 | 565 |
|---|---|
| Services billed | 1,013 across 66 procedure codes |
| Paid by Medicare | $118,483 |
Part D prescriptions in 2024
| Prescriptions (claims) | 697 · 1,187 30-day fills |
|---|---|
| Patients | 210 |
| Total drug cost | $221,727 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical groups
- Tmh Physician Associates PLLCKaty, TX · 1,690 clinicians
- Houston Methodist Specialty PhysiciansHouston, TX · 1,528 clinicians
Hospital affiliations
- Houston Methodist the Woodlands HospitalThe Woodlands, TX
- Houston Methodist Willowbrook HospitalHouston, TX
Industry payments (Open Payments)
- 2025$1,619 · 60 payments from 10 companies
- 2024$561.27 · 21 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $471.05 | 12 |
| Abbvie Inc. | $395.16 | 20 |
| Takeda Pharmaceuticals U.S.A., Inc. | $302.56 | 8 |
| Janssen Biotech, Inc. | $119.94 | 6 |
| Genzyme Corporation | $107.12 | 4 |
What the 2025 payments were for
- Food and Beverage$1,619 · 60 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 gastroenterologists in Shenandoah · All gastroenterologists in Texas