Healthcare provider profile · identity verified

Kenneth Blankstein, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Hematology & Oncology · FLEMINGTON, NJ · NPI 1184612566

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 Kenneth Blankstein, M.D. received $1,344.36 in general payments during 2025 across 69 reported records.

Daiichi Sankyo Inc. accounted for 13.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 54 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Brukinsa, Tagrisso.

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 LUPRON DEPOT as an associated drug or biological on 6475 records involving 3205 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Lupron Depot by this doctor in 2024.

ARRAY BIOPHARMA 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 98 records involving 88 distinct recipient NPIs. Public Medicare Part D data also shows 12 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 TAGRISSO as an associated drug or biological on 5285 records involving 2776 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Tagrisso by this doctor in 2024.

BeiGene 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 2084 records involving 1673 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Brukinsa by this doctor in 2024.

Celgene 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 POMALYST as an associated drug or biological on 282 records involving 237 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Pomalyst 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 SPRYCEL as an associated drug or biological on 32 records involving 32 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Sprycel 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 12 claims for Xtandi by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., 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 GAMMAGARD LIQUID as an associated drug or biological on 29 records involving 8 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Gammagard Liquid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,344.36

69 reported records · 33 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
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $180.5813.4%92025
PFIZER INC. Unresolved — no canonical attribution shown $131.819.8%72025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $116.288.7%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $98.647.3%52025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $90.736.8%52025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $70.835.3%42025
ABBVIE INC. Unresolved — no canonical attribution shown $51.523.8%32025
GENZYME CORPORATION Unresolved — no canonical attribution shown $38.272.9%22025
BeiGene USA, Inc. Unresolved — no canonical attribution shown $37.702.8%22025
Stemline Therapeutics Inc. Unresolved — no canonical attribution shown $36.892.7%22025
Incyte Corporation Unresolved — no canonical attribution shown $35.362.6%22025
SpringWorks Therapeutics, Inc. Unresolved — no canonical attribution shown $33.542.5%22025
SOBI, INC Unresolved — no canonical attribution shown $33.452.5%22025
ARRAY BIOPHARMA INC Unresolved — no canonical attribution shown $28.972.1%32025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $23.811.8%12025
TAIHO ONCOLOGY, INC. Unresolved — no canonical attribution shown $23.051.7%12025
Adaptive Biotechnologies Corporation Unresolved — no canonical attribution shown $21.941.6%12025
Menarini Silicon Biosystems, Inc. Unresolved — no canonical attribution shown $20.941.6%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $20.871.6%12025
Genentech USA, Inc. Unresolved — no canonical attribution shown $19.821.5%12025
Legend Biotech USA Inc. Unresolved — no canonical attribution shown $19.251.4%12025
Karyopharm Therapeutics Inc. Unresolved — no canonical attribution shown $19.051.4%12025
Exelixis Inc. Unresolved — no canonical attribution shown $19.001.4%12025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $18.751.4%12025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $18.691.4%12025
Invivyd Inc Unresolved — no canonical attribution shown $18.691.4%12025
Fennec Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $18.651.4%12025
Spectrum Pharmaceuticals Inc. Unresolved — no canonical attribution shown $18.521.4%12025
Celgene Corporation Unresolved — no canonical attribution shown $18.161.4%12025
Eisai Inc. Unresolved — no canonical attribution shown $16.951.3%12025
Kite Pharma, Inc. Unresolved — no canonical attribution shown $15.081.1%12025
CSL Behring Unresolved — no canonical attribution shown $14.791.1%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $13.781.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,199.0666
Long term medical supply or device loan$99.701
Education$45.602

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
ENHERTU
Normalized: enhertu
Biological, Drug AstraZeneca Pharmaceuticals LP, Daiichi Sankyo Inc. $176.97 8 2025
Source payment records
IBRANCE
Normalized: ibrance
Drug PFIZER INC. $107.91 5 2025
Source payment records
TUKYSA
Normalized: tukysa
Drug PFIZER INC. $107.91 5 2025
Source payment records
KISQALI
Normalized: kisqali
Drug Novartis Pharmaceuticals Corporation $99.70 1 2025
Source payment records
OJJAARA
Normalized: ojjaara
Drug GlaxoSmithKline, LLC. $59.27 3 2025
Source payment records
VENCLEXTA
Normalized: venclexta
Biological, Drug ABBVIE INC., Genentech USA, Inc. $54.36 3 2025
Source payment records
JEMPERLI
Normalized: jemperli
Biological GlaxoSmithKline, LLC. $39.37 2 2025
Source payment records
ZEJULA
Normalized: zejula
Drug GlaxoSmithKline, LLC. $39.37 2 2025
Source payment records
Orserdu
Normalized: orserdu
Drug Stemline Therapeutics Inc. $36.89 2 2025
Source payment records
BRAFTOVI
Normalized: braftovi
Drug ARRAY BIOPHARMA INC $28.97 3 2025
Source payment records
MEKTOVI
Normalized: mektovi
Drug ARRAY BIOPHARMA INC $28.97 3 2025
Source payment records
ADCETRIS
Normalized: adcetris
Biological PFIZER INC. $23.90 2 2025
Source payment records
ELREXFIO
Normalized: elrexfio
Drug PFIZER INC. $23.90 2 2025
Source payment records
NINLARO
Normalized: ninlaro
Drug Takeda Pharmaceuticals U.S.A., Inc. $23.81 1 2025
Source payment records
INQOVI
Normalized: inqovi
Drug TAIHO ONCOLOGY, INC. $23.05 1 2025
Source payment records
LONSURF
Normalized: lonsurf
Drug TAIHO ONCOLOGY, INC. $23.05 1 2025
Source payment records
clonoSEQ
Normalized: clonoseq
Device Adaptive Biotechnologies Corporation $21.94 1 2025
Source payment records
SARCLISA
Normalized: sarclisa
Biological GENZYME CORPORATION $21.03 1 2025
Source payment records
Cellsearch
Normalized: cellsearch
Device Menarini Silicon Biosystems, Inc. $20.94 1 2025
Source payment records
JAYPIRCA
Normalized: jaypirca
Drug Lilly USA, LLC $20.87 1 2025
Source payment records
VERZENIO
Normalized: verzenio
Drug Lilly USA, LLC $20.87 1 2025
Source payment records
CARVYKTI
Normalized: carvykti
Biological Legend Biotech USA Inc. $19.25 1 2025
Source payment records
XPOVIO
Normalized: xpovio
Drug Karyopharm Therapeutics Inc. $19.05 1 2025
Source payment records
CABOMETYX
Normalized: cabometyx
Drug Exelixis Inc. $19.00 1 2025
Source payment records
TEVIMBRA
Normalized: tevimbra
Drug BeiGene USA, Inc. $18.88 1 2025
Source payment records
BRUKINSA
Normalized: brukinsa
Drug BeiGene USA, Inc. $18.82 1 2025
Source payment records
OPDUALAG
Normalized: opdualag
Drug E.R. Squibb & Sons, L.L.C. $18.76 1 2025
Source payment records
Onivyde
Normalized: onivyde
Drug Ipsen Biopharmaceuticals, Inc $18.75 1 2025
Source payment records
ONPATTRO
Normalized: onpattro
Drug Alnylam Pharmaceuticals Inc. $18.69 1 2025
Source payment records
PEMGARDA
Normalized: pemgarda
Biological Invivyd Inc $18.69 1 2025
Source payment records
Fyarro
Normalized: fyarro
Drug Fennec Pharmaceuticals, Inc. $18.65 1 2025
Source payment records
OGSIVEO
Normalized: ogsiveo
Drug SpringWorks Therapeutics, Inc. $18.63 1 2025
Source payment records
ROLVEDON
Normalized: rolvedon
Drug Spectrum Pharmaceuticals Inc. $18.52 1 2025
Source payment records
JAKAFI
Normalized: jakafi
Drug Incyte Corporation $18.47 1 2025
Source payment records
REBLOZYL
Normalized: reblozyl
Biological Celgene Corporation $18.16 1 2025
Source payment records
Gamifant
Normalized: gamifant
Drug SOBI, INC $17.55 1 2025
Source payment records
EMRELIS
Normalized: emrelis
Drug ABBVIE INC. $16.98 1 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $16.95 1 2025
Source payment records
MONJUVI
Normalized: monjuvi
Drug Incyte Corporation $16.89 1 2025
Source payment records
PEMAZYRE
Normalized: pemazyre
Drug Incyte Corporation $16.89 1 2025
Source payment records
CALQUENCE
Normalized: calquence
Drug AstraZeneca Pharmaceuticals LP $16.81 1 2025
Source payment records
BLENREP
Normalized: blenrep
Biological GlaxoSmithKline, LLC. $16.71 1 2025
Source payment records
PLUVICTO
Normalized: pluvicto
Drug Novartis Pharmaceuticals Corporation $16.58 1 2025
Source payment records
TAGRISSO
Normalized: tagrisso
Drug AstraZeneca Pharmaceuticals LP $16.57 1 2025
Source payment records
LYNPARZA
Normalized: lynparza
Drug AstraZeneca Pharmaceuticals LP $16.47 1 2025
Source payment records
Vonjo
Normalized: vonjo
Drug SOBI, INC $15.90 1 2025
Source payment records
Yescarta
Normalized: yescarta
Drug Kite Pharma, Inc. $15.08 1 2025
Source payment records
GOMEKLI
Normalized: gomekli
Drug SpringWorks Therapeutics, Inc. $14.91 1 2025
Source payment records
Privigen
Normalized: privigen
Biological CSL Behring $14.79 1 2025
Source payment records
INJECTAFER
Normalized: injectafer
Drug Daiichi Sankyo Inc. $13.58 1 2025
Source payment records
DATROWAY
Normalized: datroway
Drug Daiichi Sankyo Inc. $7.81 1 2025
Source payment records
LORBRENA
Normalized: lorbrena
Drug ARRAY BIOPHARMA INC $6.73 1 2025
Source payment records
XALKORI
Normalized: xalkori
Drug ARRAY BIOPHARMA INC $6.73 1 2025
Source payment records
BOSULIF
Normalized: bosulif
Drug PFIZER INC. $4.90 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 26
Beneficiary count suppressed
exact normalized Medicare Part D
TAGRISSO
tagrisso
2025 Tagrisso 2024 13
Beneficiary count suppressed
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 LUPRON DEPOT
open payments reported associated product
CMS Open Payments — General Payments
6475 supporting records · 3205 recipient NPIs · example record 1201352804
Lupron Depot · 2024
Exact normalized brand match · 1 Part D row
23 suppressed by CMS
ARRAY BIOPHARMA INC
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
98 supporting records · 88 recipient NPIs · example record 1228800820
Xtandi · 2024
Exact normalized brand match · 1 Part D row
12 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
13 suppressed by CMS
BeiGene USA, Inc.
Exact reporting entity; no affiliate inference
2025 BRUKINSA
open payments reported associated product
CMS Open Payments — General Payments
2084 supporting records · 1673 recipient NPIs · example record 1202877750
Brukinsa · 2024
Exact normalized brand match · 1 Part D row
26 suppressed by CMS
Celgene Corporation
Exact reporting entity; no affiliate inference
2025 POMALYST
open payments reported associated product
CMS Open Payments — General Payments
282 supporting records · 237 recipient NPIs · example record 1184378437
Pomalyst · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 SPRYCEL
open payments reported associated product
CMS Open Payments — General Payments
32 supporting records · 32 recipient NPIs · example record 1184390211
Sprycel · 2024
Exact normalized brand match · 1 Part D row
17 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
12 suppressed by CMS
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 GAMMAGARD LIQUID
open payments reported associated product
CMS Open Payments — General Payments
29 supporting records · 8 recipient NPIs · example record 1223786557
Gammagard Liquid · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS

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
AnastrozoleAnastrozole23758
Tamoxifen CitrateTamoxifen Citrate7318
ProcritEpoetin Alfa6516
Darzalex FasproDaratumumab-Hyaluronidase-Fihj51suppressed
LetrozoleLetrozole48suppressed
PrednisonePrednisone3415
RevlimidLenalidomide31suppressed
BrukinsaZanubrutinib26suppressed
Ondansetron HclOndansetron Hcl2611
DexamethasoneDexamethasone25suppressed
ErleadaApalutamide24suppressed
AzacitidineAzacitidine23suppressed
Lupron DepotLeuprolide Acetate23suppressed
AcyclovirAcyclovir22suppressed
GabapentinGabapentin22suppressed
XareltoRivaroxaban22suppressed
NeulastaPegfilgrastim20suppressed
Ibandronate SodiumIbandronate Sodium19suppressed
Oxycodone HclOxycodone Hcl19suppressed
PomalystPomalidomide19suppressed
Abiraterone AcetateAbiraterone Acetate17suppressed
SprycelDasatinib17suppressed
Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov5016suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen16suppressed
Prochlorperazine MaleateProchlorperazine Maleate1614
Tramadol HclTramadol Hcl16suppressed
AlprazolamAlprazolam15suppressed
Pantoprazole SodiumPantoprazole Sodium15suppressed
TabrectaCapmatinib Hydrochloride14suppressed
Gamunex-CImmune Globul G/Gly/Iga Avg 4613suppressed
TagrissoOsimertinib Mesylate13suppressed
Alendronate SodiumAlendronate Sodium12suppressed
Losartan PotassiumLosartan Potassium12suppressed
Neulasta OnproPegfilgrastim12suppressed
PhenobarbitalPhenobarbital12suppressed
Potassium ChloridePotassium Chloride12suppressed
Raloxifene HclRaloxifene Hcl12suppressed
RubracaRucaparib Camsylate12suppressed
XtandiEnzalutamide12suppressed
FenofibrateFenofibrate Nanocrystallized11suppressed
Imatinib MesylateImatinib Mesylate11suppressed
Levothyroxine SodiumLevothyroxine Sodium11suppressed
LovenoxEnoxaparin Sodium11suppressed
Paroxetine HclParoxetine Hcl11suppressed

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 $1,344.36 · 69 records Daiichi Sankyo Inc. ADCETRIS, BLENREP, BOSULIF, BRAFTOVI, BRUKINSA, CABOMETYX, CALQUENCE, CARVYKTI, Cellsearch, DATROWAY, ELREXFIO, EMRELIS, ENHERTU, Fyarro, GOMEKLI, Gamifant, IBRANCE, INJECTAFER, INQOVI, JAKAFI, JAYPIRCA, JEMPERLI, KISQALI, LONSURF, LORBRENA, LYNPARZA, Lenvima, MEKTOVI, MONJUVI, NINLARO, OGSIVEO, OJJAARA, ONPATTRO, OPDUALAG, Onivyde, Orserdu, PEMAZYRE, PEMGARDA, PLUVICTO, Privigen, REBLOZYL, ROLVEDON, SARCLISA, TAGRISSO, TEVIMBRA, TUKYSA, VENCLEXTA, VERZENIO, Vonjo, XALKORI, XPOVIO, Yescarta, ZEJULA, clonoSEQ 8
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