Ginger January Tsai-Nguyen, M.D.
NPI 1255775359ActiveIndividual· Internal Medicine, Critical Care Medicine· Dallas, TX
Internal Medicine, Critical Care Medicine (M.D.) in Dallas, Texas, trained at Texas A & M University System, Hsc, College of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $102,722 for 238 claims, against $40,070 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 8 companies reporting payments in 2025, $496.96 in all, mostly food and beverage.
Overview
| NPI | 1255775359 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 19, 2013 |
| Last updated in NPPES | Jul 5, 2022 |
| Certified by provider | Jul 5, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | R3447 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine | 207R00000X | R3447 | 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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 150 |
|---|---|
| Services billed | 408 across 20 procedure codes |
| Paid by Medicare | $40,070 |
Part D prescriptions in 2024
| Prescriptions (claims) | 238 · 281 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $102,722 |
| Generic share | 25% of claims |
Education and affiliations
| Medical school | Texas A & M University System, Hsc, College of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Internal Medicine |
Medical group
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2025$496.96 · 18 payments from 8 companies
- 2024$348.20 · 15 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $147.69 | 7 |
| Ceribell, Inc. | $110.00 | 1 |
| Regeneron Healthcare Solutions, Inc. | $58.20 | 2 |
| Merck Sharp & Dohme LLC | $51.66 | 2 |
| Grifols USA, LLC | $45.74 | 2 |
What the 2025 payments were for
- Food and Beverage$496.96 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 66 critical care physicians in Dallas · All critical care physicians in Texas