David Tamura, MD
Hematology & Oncology · Honolulu, HINPI 1295953123
Payments from drug & device makers
Across 918 payments — averaging $109.53 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Janssen Research & Development, LLC$47K
- Exelixis Inc.$20K
- Bayer$5K
- Eli Lilly$3K
- Array Biopharma Inc$2K
- Pfizer$2K
- plus $20K from 54 others
What the payments were for
- Consulting fees$5,83519%
- Speaking & faculty fees$1,8906%
- Food & beverage$21,97971%
- Education$1,1864%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$100,549 in reported general payments places this provider in the 80th percentile of 42 hematology & oncology providers in Hawaii.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| TagrissoOsimertinib Mesylate | 115 | $1,990,976 |
| XtandiEnzalutamide | 90 | $1,114,621 |
| KeytrudaPembrolizumab | 70 | $906,526 |
| NubeqaDarolutamide | 68 | $843,690 |
| XgevaDenosumab | 181 | $579,484 |
| RevlimidLenalidomide | 29 | $471,670 |
| Darzalex FasproDaratumumab-Hyaluronidase-Fihj | 29 | $421,557 |
| IbrancePalbociclib | 26 | $421,002 |
| Lupron DepotLeuprolide Acetate | 68 | $347,408 |
| VerzenioAbemaciclib | 19 | $315,804 |
| Lenalidomide | 18 | $282,194 |
| OpdivoNivolumab | 14 | $208,419 |
| Abiraterone Acetate | 66 | $198,861 |
| RybrevantAmivantamab-Vmjw | 13 | $195,256 |
| KisqaliRibociclib Succinate | 18 | $179,091 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AstraZenecaTagrisso | $1,491 | $1,990,976115 claims |
| Astellas Pharma US IncXtandi | $837 | $1,114,62190 claims |
| PfizerIbrance, Bosulif, Nyvepria, Ruxience, Zirabev | $1,941 | $973,101178 claims |
| MerckKeytruda | $684 | $906,52670 claims |
| BayerNubeqa | $5,160 | $843,69068 claims |
| AmgenXgeva, Neulasta, Prolia | $551 | $774,644224 claims |
| Bristol Myers SquibbRevlimid | $238 | $471,67029 claims |
| AbbVieLupron Depot, Creon | $841 | $429,33491 claims |
| Lilly USA, LLCVerzenio | $425 | $315,80419 claims |
| Johnson & JohnsonRybrevant, Procrit | $1,441 | $288,03070 claims |
| E.r. Squibb & Sons, L.L.C.Opdivo | $659 | $208,41914 claims |
| NovartisKisqali | $727 | $179,09118 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 80th percentile of 42 hematology & oncology providers in Hawaii.
Other hematology & oncology in Honolulu
- Jared AcobaHonolulu$4.5M
- Jennifer CarneyHonolulu$1.9M
- Arnold YeeHonolulu$583K
- Kenneth SumidaHonolulu$191K
- Craig BoddyHonolulu$131K
- Tamie KernsHonolulu$48K
- Melvin PalalayHonolulu$35K
- Jodi KagiharaHonolulu$27K
- Jonathan ChoHonolulu$21K
- Ryon NakasoneHonolulu$20K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.