Diem Thuy Chu, PA-C
NPI 1225184955ActiveIndividual· Physician Assistant· Houston, TX
Physician Assistant (PA-C) with Physicians Referral Service, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $184,880 for 314 claims, against $1,472 paid for services in 2024. Incyte Corporation was the largest of 16 companies reporting payments in 2025, $3,322 in all, mostly food and beverage.
Overview
| NPI | 1225184955 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jan 26, 2007 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA02469 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 15 |
|---|---|
| Services billed | 29 across 5 procedure codes |
| Paid by Medicare | $1,472 |
Part D prescriptions in 2024
| Prescriptions (claims) | 314 · 408 30-day fills |
|---|---|
| Patients | 48 |
| Total drug cost | $184,880 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Physicians Referral ServiceHouston, TX · 2,765 clinicians
Industry payments (Open Payments)
- 2025$3,322 · 53 payments from 16 companies
- 2024$3,661 · 57 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $806.91 | 10 |
| Astellas Pharma US Inc | $650.66 | 12 |
| Gilead Sciences, Inc. | $331.67 | 3 |
| Janssen Biotech, Inc. | $293.56 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $219.56 | 4 |
What the 2025 payments were for
- Food and Beverage$2,985 · 49 payments
- Education$336.96 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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