Healthcare provider profile · identity verified

Ryon Nakasone, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · HONOLULU, HI · NPI 1114138351

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Ryon Nakasone, MD received $2,732.72 in general payments during 2025 across 115 reported records.

AstraZeneca Pharmaceuticals LP accounted for 15.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 49 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Brukinsa, Cabometyx, Imbruvica, Orgovyx, Xtandi.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported IMBRUVICA as an associated drug or biological on 15599 records involving 6881 distinct recipient NPIs. Public Medicare Part D data also shows 43 claims for Imbruvica by this doctor in 2024.

Astellas Pharma US Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Xtandi as an associated drug or biological on 11345 records involving 5418 distinct recipient NPIs. Public Medicare Part D data also shows 98 claims for Xtandi by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported CALQUENCE as an associated drug or biological on 8404 records involving 3935 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Calquence by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TAGRISSO as an associated drug or biological on 5285 records involving 2776 distinct recipient NPIs. Public Medicare Part D data also shows 40 claims for Tagrisso by this doctor in 2024.

BeOne Medicines USA, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported BRUKINSA as an associated drug or biological on 10251 records involving 4941 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Brukinsa by this doctor in 2024.

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Eliquis by this doctor in 2024.

Exelixis Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported CABOMETYX as an associated drug or biological on 11749 records involving 4526 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Cabometyx by this doctor in 2024.

Janssen Biotech, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported IMBRUVICA as an associated drug or biological on 47 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 43 claims for Imbruvica by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PROMACTA as an associated drug or biological on 47 records involving 47 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Promacta by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Eliquis by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported IBRANCE as an associated drug or biological on 11505 records involving 4934 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Ibrance by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ORGOVYX as an associated drug or biological on 16373 records involving 6981 distinct recipient NPIs. Public Medicare Part D data also shows 30 claims for Orgovyx by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 98 claims for Xtandi by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$2,732.72

115 reported records · 32 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $425.1115.6%172025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $369.8313.5%182025
Incyte Corporation Unresolved — no canonical attribution shown $237.978.7%102025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $214.337.8%82025
US Oncology Corporate, Inc. Unresolved — no canonical attribution shown $210.017.7%22025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $183.336.7%82025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $169.706.2%72025
Eisai Inc. Unresolved — no canonical attribution shown $141.085.2%92025
PFIZER INC. Unresolved — no canonical attribution shown $102.853.8%42025
ABBVIE INC. Unresolved — no canonical attribution shown $83.973.1%42025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $77.022.8%42025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $71.142.6%32025
Genentech USA, Inc. Unresolved — no canonical attribution shown $43.501.6%22025
Agios Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $35.731.3%12025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $33.011.2%12025
PharmaEssentia USA Corporation Unresolved — no canonical attribution shown $30.631.1%12025
EMD Serono, Inc. Unresolved — no canonical attribution shown $25.510.9%12025
SERVIER PHARMACEUTICALS LLC Unresolved — no canonical attribution shown $24.390.9%12025
KYOWA KIRIN, INC. Unresolved — no canonical attribution shown $24.170.9%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $24.070.9%12025
Genmab U.S., Inc. Unresolved — no canonical attribution shown $21.780.8%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.750.8%12025
Stemline Therapeutics Inc. Unresolved — no canonical attribution shown $20.700.8%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $17.720.7%12025
Exelixis Inc. Unresolved — no canonical attribution shown $17.430.6%12025
Deciphera Pharmaceuticals Inc. Unresolved — no canonical attribution shown $17.080.6%12025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $17.030.6%12025
BeOne Medicines USA, Inc. Unresolved — no canonical attribution shown $16.240.6%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.400.5%12025
GENZYME CORPORATION Unresolved — no canonical attribution shown $14.150.5%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $14.100.5%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $13.990.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,652.72114
Education$80.001

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
IMFINZI
Normalized: imfinzi
Biological AstraZeneca Pharmaceuticals LP $308.00 12 2025
Source payment records
NINLARO
Normalized: ninlaro
Drug Takeda Pharmaceuticals U.S.A., Inc. $214.33 8 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $169.70 7 2025
Source payment records
DARZALEX
Normalized: darzalex
Biological Janssen Biotech, Inc. $149.32 7 2025
Source payment records
PLUVICTO
Normalized: pluvicto
Drug Novartis Pharmaceuticals Corporation $144.28 6 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $141.08 9 2025
Source payment records
LUTATHERA
Normalized: lutathera
Drug Novartis Pharmaceuticals Corporation $137.45 5 2025
Source payment records
Fabhalta
Normalized: fabhalta
Drug Novartis Pharmaceuticals Corporation $130.20 7 2025
Source payment records
SCEMBLIX
Normalized: scemblix
Drug Novartis Pharmaceuticals Corporation $130.20 7 2025
Source payment records
JAKAFI
Normalized: jakafi
Drug Incyte Corporation $106.90 5 2025
Source payment records
XTANDI
Normalized: xtandi
Drug Astellas Pharma US Inc, PFIZER INC. $105.35 4 2025
Source payment records
KISQALI
Normalized: kisqali
Drug Novartis Pharmaceuticals Corporation $95.35 5 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $81.28 3 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $81.28 3 2025
Source payment records
EPKINLY
Normalized: epkinly
Drug ABBVIE INC., Genmab U.S., Inc. $80.05 4 2025
Source payment records
LYNPARZA
Normalized: lynparza
Drug AstraZeneca Pharmaceuticals LP $77.17 3 2025
Source payment records
OPDIVO
Normalized: opdivo
Biological E.R. Squibb & Sons, L.L.C. $77.02 4 2025
Source payment records
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $71.14 3 2025
Source payment records
Xofigo
Normalized: xofigo
Drug Bayer Healthcare Pharmaceuticals Inc. $71.14 3 2025
Source payment records
IMBRUVICA
Normalized: imbruvica
Drug ABBVIE INC. $58.27 3 2025
Source payment records
ENHERTU
Normalized: enhertu
Biological AstraZeneca Pharmaceuticals LP $55.16 1 2025
Source payment records
MONJUVI
Normalized: monjuvi
Drug Incyte Corporation $51.07 4 2025
Source payment records
NIKTIMVO
Normalized: niktimvo
Drug Incyte Corporation $47.00 2 2025
Source payment records
TECVAYLI
Normalized: tecvayli
Biological Janssen Biotech, Inc. $41.17 2 2025
Source payment records
PYRUKYND
Normalized: pyrukynd
Drug Agios Pharmaceuticals, Inc. $35.73 1 2025
Source payment records
ERLEADA
Normalized: erleada
Drug Janssen Biotech, Inc. $34.01 1 2025
Source payment records
Onivyde
Normalized: onivyde
Drug Ipsen Biopharmaceuticals, Inc $33.01 1 2025
Source payment records
ZYNYZ
Normalized: zynyz
Drug Incyte Corporation $32.37 3 2025
Source payment records
BESREMI
Normalized: besremi
Drug PharmaEssentia USA Corporation $30.63 1 2025
Source payment records
AVYCAZ
Normalized: avycaz
Drug ABBVIE INC. $25.70 1 2025
Source payment records
DALVANCE
Normalized: dalvance
Drug ABBVIE INC. $25.70 1 2025
Source payment records
EMBLAVEO
Normalized: emblaveo
Drug ABBVIE INC. $25.70 1 2025
Source payment records
TEFLARO
Normalized: teflaro
Drug ABBVIE INC. $25.70 1 2025
Source payment records
Xolair
Normalized: xolair
Biological Genentech USA, Inc. $24.96 1 2025
Source payment records
Tibsovo
Normalized: tibsovo
Drug SERVIER PHARMACEUTICALS LLC $24.39 1 2025
Source payment records
POTELIGEO
Normalized: poteligeo
Drug KYOWA KIRIN, INC. $24.17 1 2025
Source payment records
Stivarga
Normalized: stivarga
Drug Bayer Healthcare Pharmaceuticals Inc. $22.36 1 2025
Source payment records
PADCEV
Normalized: padcev
Biological PFIZER INC. $21.57 1 2025
Source payment records
Orserdu
Normalized: orserdu
Drug Stemline Therapeutics Inc. $20.70 1 2025
Source payment records
KEYTRUDA QLEX
Normalized: keytruda qlex
Biological Merck Sharp & Dohme LLC $19.34 1 2025
Source payment records
PEMAZYRE
Normalized: pemazyre
Drug Incyte Corporation $18.70 1 2025
Source payment records
Venclexta
Normalized: venclexta
Biological Genentech USA, Inc. $18.54 1 2025
Source payment records
CABOMETYX
Normalized: cabometyx
Drug Exelixis Inc. $17.43 1 2025
Source payment records
QINLOCK
Normalized: qinlock
Drug Deciphera Pharmaceuticals Inc. $17.08 1 2025
Source payment records
TGCT
Normalized: tgct
Drug Deciphera Pharmaceuticals Inc. $17.08 1 2025
Source payment records
LIBTAYO
Normalized: libtayo
Biological Regeneron Healthcare Solutions, Inc. $17.03 1 2025
Source payment records
BRUKINSA
Normalized: brukinsa
Drug BeOne Medicines USA, Inc. $16.24 1 2025
Source payment records
OJJAARA
Normalized: ojjaara
Drug GlaxoSmithKline, LLC. $14.10 1 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $13.99 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
BRUKINSA
brukinsa
2025 Brukinsa 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
CABOMETYX
cabometyx
2025 Cabometyx 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
IMBRUVICA
imbruvica
2025 Imbruvica 2024 43
Beneficiary count suppressed
exact normalized Medicare Part D
ORGOVYX
orgovyx
2025 Orgovyx 2024 30
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 2024 98 exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 IMBRUVICA
open payments reported associated product
CMS Open Payments — General Payments
15599 supporting records · 6881 recipient NPIs · example record 1201352838
Imbruvica · 2024
Exact normalized brand match · 1 Part D row
43 suppressed by CMS
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Xtandi
open payments reported associated product
CMS Open Payments — General Payments
11345 supporting records · 5418 recipient NPIs · example record 1238560686
Xtandi · 2024
Exact normalized brand match · 1 Part D row
98 13
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 CALQUENCE
open payments reported associated product
CMS Open Payments — General Payments
8404 supporting records · 3935 recipient NPIs · example record 1206131382
Calquence · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 TAGRISSO
open payments reported associated product
CMS Open Payments — General Payments
5285 supporting records · 2776 recipient NPIs · example record 1206131546
Tagrisso · 2024
Exact normalized brand match · 1 Part D row
40 suppressed by CMS
BeOne Medicines USA, Inc.
Exact reporting entity; no affiliate inference
2025 BRUKINSA
open payments reported associated product
CMS Open Payments — General Payments
10251 supporting records · 4941 recipient NPIs · example record 1202883638
Brukinsa · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
Exelixis Inc.
Exact reporting entity; no affiliate inference
2025 CABOMETYX
open payments reported associated product
CMS Open Payments — General Payments
11749 supporting records · 4526 recipient NPIs · example record 1218789893
Cabometyx · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 IMBRUVICA
open payments reported associated product
CMS Open Payments — General Payments
47 supporting records · 33 recipient NPIs · example record 1174328453
Imbruvica · 2024
Exact normalized brand match · 1 Part D row
43 suppressed by CMS
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 PROMACTA
open payments reported associated product
CMS Open Payments — General Payments
47 supporting records · 47 recipient NPIs · example record 1200028032
Promacta · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 IBRANCE
open payments reported associated product
CMS Open Payments — General Payments
11505 supporting records · 4934 recipient NPIs · example record 1228794164
Ibrance · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ORGOVYX
open payments reported associated product
CMS Open Payments — General Payments
16373 supporting records · 6981 recipient NPIs · example record 1228794230
Orgovyx · 2024
Exact normalized brand match · 1 Part D row
30 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
19368 supporting records · 7657 recipient NPIs · example record 1228794230
Xtandi · 2024
Exact normalized brand match · 1 Part D row
98 13

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
XtandiEnzalutamide9813
DexamethasoneDexamethasone5412
ImbruvicaIbrutinib43suppressed
TagrissoOsimertinib Mesylate40suppressed
AnastrozoleAnastrozole3712
AcyclovirAcyclovir30suppressed
HydroxyureaHydroxyurea30suppressed
OrgovyxRelugolix30suppressed
PrednisonePrednisone2914
Ondansetron HclOndansetron Hcl2316
PromactaEltrombopag Olamine22suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim19suppressed
CalquenceAcalabrutinib Maleate18suppressed
EliquisApixaban18suppressed
BrukinsaZanubrutinib16suppressed
CabometyxCabozantinib S-Malate15suppressed
DapsoneDapsone12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
IbrancePalbociclib12suppressed
PomalystPomalidomide12suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $2,732.72 · 115 records AstraZeneca Pharmaceuticals LP AVYCAZ, BESREMI, BRUKINSA, CABOMETYX, DALVANCE, DARZALEX, EMBLAVEO, ENHERTU, EPKINLY, ERLEADA, Fabhalta, IMBRUVICA, IMFINZI, JAKAFI, KEYTRUDA, KEYTRUDA QLEX, KISQALI, LIBTAYO, LUTATHERA, LYNPARZA, Lenvima, MONJUVI, NIKTIMVO, NINLARO, Nubeqa, OJJAARA, OPDIVO, ORGOVYX, Onivyde, Orserdu, PADCEV, PEMAZYRE, PLUVICTO, POTELIGEO, PYRUKYND, QINLOCK, SCEMBLIX, Stivarga, TALZENNA, TECVAYLI, TEFLARO, TGCT, Tibsovo, ULTOMIRIS, Venclexta, XTANDI, Xofigo, Xolair, ZYNYZ 13
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error