Rick Hayashi, MD
Nephrology · Honolulu, HINPI 1922027572
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 92.3% of the total across 225 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 26 manufacturers, the largest accounting for just 15.4% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2023 at $1,605 and has fallen 66.1% since, to $545 in 2025.
Across 225 payments — averaging $22.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$790
- Vifor Pharma, Inc.$776
- Amgen$550
- Travere Therapeutics, Inc.$361
- Otsuka America Pharmaceutical, Inc.$321
- Veloxis Pharmaceuticals, Inc.$302
- plus $2K from 20 others
What the payments were for
- Food & beverage$4,73392%
- Education$3958%
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.
| Company | Payments | Total |
|---|---|---|
| AstraZeneca(2 entities) | 31 | $790 |
| Vifor Pharma, Inc. | 35 | $776 |
| Amgen(2 entities) | 45 | $550 |
| Travere Therapeutics, Inc. | 15 | $361 |
| Otsuka America Pharmaceutical, Inc. | 13 | $321 |
| Veloxis Pharmaceuticals, Inc. | 10 | $302 |
| Bayer | 14 | $261 |
| Novartis | 6 | $258 |
| GSK | 12 | $230 |
| Fresenius USA Marketing, Inc. | 2 | $145 |
| Aurinia Pharma U.S., Inc. | 6 | $145 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $124 |
| Lilly USA, LLC | 1 | $117 |
| Boehringer Ingelheim | 4 | $106 |
| Calliditas Therapeutics US Inc. | 5 | $101 |
| Mallinckrodt Hospital Products Inc. | 4 | $97 |
| Apellis Pharmaceuticals, Inc. | 3 | $88 |
| Ardelyx, Inc. | 4 | $85 |
| Nxstage Medical, Inc. | 2 | $56 |
| Novo Nordisk | 3 | $52 |
| Kyowa Kirin, Inc. | 2 | $44 |
| Akebia Therapeutics Inc | 2 | $38 |
| Ultragenyx Pharmaceutical Inc. | 1 | $24 |
| Amarin Pharma, Inc. | 1 | $23 |
| ANI Pharmaceuticals, Inc. | 1 | $20 |
| AbbVie | 1 | $15 |
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.
- Velphoro$125
- JARDIANCE$117
- LIVTENCITY$115
How this compares
$5,128 in reported general payments places this provider in the 80th percentile of 57 nephrology 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 |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 117 | $142,559 |
| KerendiaFinerenone | 104 | $137,524 |
| JardianceEmpagliflozin | 78 | $84,295 |
| VeltassaPatiromer Calcium Sorbitex | 28 | $38,119 |
| InvokanaCanagliflozin | 24 | $36,559 |
| Cinacalcet Hcl | 41 | $35,811 |
| Astagraf XlTacrolimus | 15 | $13,550 |
| Sevelamer Carbonate | 45 | $8,765 |
| Potassium Citrate ErPotassium Citrate | 48 | $4,155 |
| Calcium Acetate | 29 | $2,782 |
| Calcitriol | 102 | $2,759 |
| Olmesartan Medoxomil | 70 | $2,619 |
| Tacrolimus | 18 | $2,511 |
| Mycophenolate Mofetil | 14 | $1,623 |
| Allopurinol | 128 | $1,446 |
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 |
|---|---|---|
| AstraZenecaFarxiga | $790 | $142,559117 claims |
| BayerKerendia | $261 | $137,524104 claims |
| Boehringer IngelheimJardiance | $106 | $84,29578 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 57 nephrology providers in Hawaii.
Other nephrology in Honolulu
- Kunal ParekhHonolulu$172K
- Christie IzutsuHonolulu$50K
- Jared SugiharaHonolulu$39K
- Eugene WongHonolulu$37K
- Shiuh ChengHonolulu$21K
- Leilani Ka'aneheHonolulu$10K
- Antonette Veronica HernandezHonolulu$9K
- David NaaiHonolulu$5K
- Arie Olivo GanzHonolulu$5K
- Sorkko ThirunavukkarasuHonolulu$4K
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.