Misako Nagasaka, MD
NPI 1063707958ActiveIndividual· Internal Medicine, Hematology & Oncology· Orange, CA
Internal Medicine, Hematology & Oncology (MD) with Uc Regents, practicing in Orange, California. Their prescriptions cost Medicare Part D more than their services did: $3,090,684 for 893 claims, against $61,881 paid for services in 2024. Janssen Biotech, Inc. was the largest of 13 companies reporting payments in 2025, $106,175 in all, mostly consulting fees. Lists Hoag Memorial Hospital Presbyterian and 1 other hospital as hospital affiliations.
Overview
| NPI | 1063707958 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 18, 2011 |
| Last updated in NPPES | Mar 21, 2023 |
| Certified by provider | Mar 21, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A174243 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 4301104988 | MI |
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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 133 |
|---|---|
| Services billed | 615 across 12 procedure codes |
| Paid by Medicare | $61,881 |
Part D prescriptions in 2024
| Prescriptions (claims) | 893 · 1,120 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $3,090,684 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$106,175 · 97 payments from 13 companies
- 2024$119,923 · 109 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $50,097 | 30 |
| Pfizer Inc. | $34,551 | 29 |
| Astrazeneca Uk Limited | $9,020 | 4 |
| E.R. Squibb & Sons, L.L.C. | $5,233 | 12 |
| Astrazeneca Pharmaceuticals LP | $2,293 | 4 |
What the 2025 payments were for
- Consulting Fee$54,509 · 22 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$37,710 · 12 payments
- Travel and Lodging$10,162 · 28 payments
- Food and Beverage$2,294 · 33 payments
- Education$1,500 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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