Ronald H. Yanagihara, M.D.
NPI 1366478240ActiveIndividual· Internal Medicine, Hematology & Oncology· Gilroy, CA
Internal Medicine, Hematology & Oncology (M.D.) in Gilroy, California, trained at University of Minnesota Medical School (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $284,739 for 84 claims, against $11,992 paid for services in 2024. Janssen Biotech, Inc. was the largest of 4 companies reporting payments in 2025, $365.55 in all, mostly food and beverage.
Overview
| NPI | 1366478240 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 23, 2006 |
| Last updated in NPPES | Jul 28, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G47486 | CA |
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 (HI); Practitioner - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 153 across 6 procedure codes |
| Paid by Medicare | $11,992 |
Part D prescriptions in 2024
| Prescriptions (claims) | 84 · 120 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $284,739 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Pali Momi Medical CenterAiea, HI · 90 clinicians
Hospital affiliations
- Pali Momi Medical CenterAiea, HI
- Straub Clinic and HospitalHonolulu, HI
Industry payments (Open Payments)
- 2025$365.55 · 5 payments from 4 companies
- 2024$123.94 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $172.02 | 2 |
| Janssen Scientific Affairs, LLC | $102.03 | 1 |
| Daiichi Sankyo Inc. | $73.55 | 1 |
| Astrazeneca Pharmaceuticals LP | $17.95 | 1 |
What the 2025 payments were for
- Food and Beverage$365.55 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Gilroy
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