Koji Sasaki, M.D.
NPI 1023318284ActiveIndividual· Internal Medicine, Hematology & Oncology· Houston, TX
Internal Medicine, Hematology & Oncology (M.D.) in Houston, Texas, licensed in TX, with an NPI issued in October 2010. Their prescriptions cost Medicare Part D more than their services did: $1,047,179 for 233 claims, against $54,509 paid for services in 2024. Otsuka Pharmaceutical Co., Ltd. was the largest of 7 companies reporting payments in 2025, $18,831 in all, mostly speaking and faculty fees.
Overview
| NPI | 1023318284 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 21, 2010 |
| Last updated in NPPES | Oct 4, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | P9119 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 107 |
|---|---|
| Services billed | 559 across 10 procedure codes |
| Paid by Medicare | $54,509 |
Part D prescriptions in 2024
| Prescriptions (claims) | 233 · 265 30-day fills |
|---|---|
| Patients | 51 |
| Total drug cost | $1,047,179 |
| Generic share | 58% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$18,831 · 13 payments from 7 companies
- 2024$16,582 · 21 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka Pharmaceutical Co., Ltd. | $10,000 | 4 |
| Amgen Inc. | $6,495 | 3 |
| Novartis Pharmaceuticals Corporation | $2,200 | 1 |
| Glaxosmithkline, LLC. | $57.41 | 2 |
| Rigel Pharmaceuticals, Inc. | $31.61 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$14,446 · 6 payments
- Consulting Fee$4,249 · 2 payments
- Food and Beverage$136.10 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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