Brandon Kobayashi, MD
NPI 1679078257ActiveIndividual· Hospitalist· San Jose, CA
Hospitalist (MD) in San Jose, California, trained at University of Hawaii John A. Burns School of Medicine (class of 2018). Part D covered 172 prescriptions written in 2024, 76% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 19 companies reporting payments in 2025, $763.46 in all, mostly food and beverage.
Overview
| NPI | 1679078257 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 27, 2018 |
| Last updated in NPPES | Jun 30, 2021 |
| Certified by provider | Jun 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A164599 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Medical Oncology (HI) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 172 · 225 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $297,487 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Queens University Medical GroupHonolulu, HI · 614 clinicians
- The Queens Medical CenterHonolulu, HI · 192 clinicians
Hospital affiliations
- Kuakini Medical CenterHonolulu, HI
- The Queens Medical CenterHonolulu, HI
Industry payments (Open Payments)
- 2025$763.46 · 27 payments from 19 companies
- 2024$733.08 · 16 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $107.28 | 4 |
| Astellas Pharma US Inc | $99.99 | 1 |
| Janssen Biotech, Inc. | $69.78 | 3 |
| Abbvie Inc. | $55.63 | 2 |
| Novartis Pharmaceuticals Corporation | $54.59 | 2 |
What the 2025 payments were for
- Food and Beverage$663.47 · 26 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 hospitalists in San Jose · All hospitalists in California