Healthcare provider profile · identity verified

Daniel G. Arkfeld, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Rheumatology · LOS ANGELES, CA · NPI 1780610105

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 Daniel G. Arkfeld, M.D. received $57,148.66 in general payments during 2025 across 124 reported records.

Amgen Inc. accounted for 33.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 20 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Benlysta, Kevzara, Otezla, Rinvoq.

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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Linzess by this doctor in 2024.

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 RINVOQ as an associated drug or biological on 279238 records involving 34343 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Rinvoq by this doctor in 2024.

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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 44 claims for Synthroid by this doctor in 2024.

Amgen 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 OTEZLA as an associated drug or biological on 177267 records involving 48600 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Otezla by this doctor in 2024.

GENZYME 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 KEVZARA as an associated drug or biological on 5840 records involving 2002 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Kevzara by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported BENLYSTA as an associated drug or biological on 19884 records involving 5034 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Benlysta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$57,148.66

124 reported records · 13 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
Amgen Inc. Unresolved — no canonical attribution shown $19,147.9333.5%312025
GENZYME CORPORATION Unresolved — no canonical attribution shown $12,803.6822.4%62025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $10,571.0818.5%282025
ABBVIE INC. Unresolved — no canonical attribution shown $7,311.4112.8%232025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $3,500.116.1%152025
KYOWA KIRIN, INC. Unresolved — no canonical attribution shown $3,275.285.7%72025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $121.810.2%12025
UCB, Inc. Unresolved — no canonical attribution shown $113.030.2%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $110.720.2%42025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $84.300.1%42025
PFIZER INC. Unresolved — no canonical attribution shown $55.420.1%22025
Genentech USA, Inc. Unresolved — no canonical attribution shown $29.900.1%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $23.990.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$38,502.0016
Consulting Fee$11,342.504
Travel and Lodging$3,909.1116
Food and Beverage$3,318.0687
Education$76.991

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
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $15,334.93 21 2025
Source payment records
KEVZARA
Normalized: kevzara
Biological GENZYME CORPORATION $12,803.68 6 2025
Source payment records
BENLYSTA
Normalized: benlysta
Biological GlaxoSmithKline, LLC. $10,571.08 28 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $7,279.83 22 2025
Source payment records
TAVNEOS
Normalized: tavneos
Drug Amgen Inc. $3,689.17 4 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $3,500.11 15 2025
Source payment records
CRYSVITA
Normalized: crysvita
Drug KYOWA KIRIN, INC. $3,275.28 7 2025
Source payment records
SIMPONI ARIA
Normalized: simponi aria
Biological Janssen Biotech, Inc. $124.99 1 2025
Source payment records
SAPHNELO
Normalized: saphnelo
Biological AstraZeneca Pharmaceuticals LP $121.81 1 2025
Source payment records
Bimzelx
Normalized: bimzelx
Biological UCB, Inc. $113.03 1 2025
Source payment records
COSENTYX
Normalized: cosentyx
Drug Novartis Pharmaceuticals Corporation $110.72 4 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $84.30 4 2025
Source payment records
ENBREL
Normalized: enbrel
Biological Amgen Inc. $63.33 3 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $63.33 3 2025
Source payment records
XELJANZ
Normalized: xeljanz
Drug PFIZER INC. $55.42 2 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $52.84 2 2025
Source payment records
KRYSTEXXA
Normalized: krystexxa
Biological Amgen Inc. $30.59 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $29.91 1 2025
Source payment records
Gazyva
Normalized: gazyva
Biological Genentech USA, Inc. $29.90 1 2025
Source payment records
STRENSIQ
Normalized: strensiq
Biological Alexion Pharmaceuticals, Inc. $23.99 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
BENLYSTA
benlysta
2025 Benlysta 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
KEVZARA
kevzara
2025 Kevzara 2024 13
Beneficiary count suppressed
exact normalized Medicare Part D
OTEZLA
otezla
2025 Otezla 2024 12
Beneficiary count suppressed
exact normalized Medicare Part D
RINVOQ
rinvoq
2025 Rinvoq 2024 28
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 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 RINVOQ
open payments reported associated product
CMS Open Payments — General Payments
279238 supporting records · 34343 recipient NPIs · example record 1201352600
Rinvoq · 2024
Exact normalized brand match · 1 Part D row
28 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
44 12
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 OTEZLA
open payments reported associated product
CMS Open Payments — General Payments
177267 supporting records · 48600 recipient NPIs · example record 1226871616
Otezla · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
GENZYME CORPORATION
Exact reporting entity; no affiliate inference
2025 KEVZARA
open payments reported associated product
CMS Open Payments — General Payments
5840 supporting records · 2002 recipient NPIs · example record 1233195032
Kevzara · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 BENLYSTA
open payments reported associated product
CMS Open Payments — General Payments
19884 supporting records · 5034 recipient NPIs · example record 1190332353
Benlysta · 2024
Exact normalized brand match · 1 Part D row
11 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
PrednisonePrednisone15524
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen9919
Hydroxychloroquine SulfateHydroxychloroquine Sulfate6217
Tramadol HclTramadol Hcl6213
Duloxetine HclDuloxetine Hcl5911
Levothyroxine SodiumLevothyroxine Sodium5919
GabapentinGabapentin5813
CelecoxibCelecoxib5414
SynthroidLevothyroxine Sodium4412
OmeprazoleOmeprazole3915
Losartan PotassiumLosartan Potassium37suppressed
MeloxicamMeloxicam37suppressed
Atorvastatin CalciumAtorvastatin Calcium36suppressed
FamotidineFamotidine34suppressed
ColchicineColchicine33suppressed
Montelukast SodiumMontelukast Sodium33suppressed
Potassium ChloridePotassium Chloride33suppressed
Tizanidine HclTizanidine Hcl32suppressed
Amlodipine BesylateAmlodipine Besylate31suppressed
IbuprofenIbuprofen31suppressed
Zolpidem TartrateZolpidem Tartrate31suppressed
RasuvoMethotrexate/Pf30suppressed
PregabalinPregabalin29suppressed
RinvoqUpadacitinib28suppressed
Acetaminophen-CodeineAcetaminophen With Codeine26suppressed
MethotrexateMethotrexate Sodium2613
Trazodone HclTrazodone Hcl24suppressed
LisinoprilLisinopril22suppressed
MethylprednisoloneMethylprednisolone2218
Cosentyx Sensoready (2 Pens)Secukinumab21suppressed
Enbrel SureclickEtanercept21suppressed
Pantoprazole SodiumPantoprazole Sodium21suppressed
LeflunomideLeflunomide20suppressed
Fluticasone PropionateFluticasone Propionate19suppressed
ValacyclovirValacyclovir Hcl19suppressed
AllopurinolAllopurinol18suppressed
LorazepamLorazepam18suppressed
Oxycodone HclOxycodone Hcl18suppressed
TopiramateTopiramate17suppressed
DiazepamDiazepam16suppressed
Bupropion XlBupropion Hcl15suppressed
Buspirone HclBuspirone Hcl15suppressed
Potassium Citrate ErPotassium Citrate15suppressed
AlprazolamAlprazolam14suppressed
Cevimeline HclCevimeline Hcl14suppressed
Cimzia (2 Pack)Certolizumab Pegol13suppressed
Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov5013suppressed
Humira(Cf) PenAdalimumab13suppressed
HydrochlorothiazideHydrochlorothiazide13suppressed
KevzaraSarilumab13suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst13suppressed
OtrexupMethotrexate/Pf13suppressed
Estradiol (Once Weekly)Estradiol12suppressed
Icosapent EthylIcosapent Ethyl12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Np ThyroidThyroid,pork12suppressed
OtezlaApremilast12suppressed
Albuterol Sulfate HfaAlbuterol Sulfate11suppressed
AzathioprineAzathioprine11suppressed
BenlystaBelimumab11suppressed
LinzessLinaclotide11suppressed
NabumetoneNabumetone11suppressed
Tramadol Hcl ErTramadol 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 $57,148.66 · 124 records Amgen Inc. ACTHAR, BENLYSTA, Bimzelx, COSENTYX, CRYSVITA, ENBREL, EVENITY, Gazyva, KEVZARA, KRYSTEXXA, OTEZLA, RINVOQ, SAPHNELO, SIMPONI ARIA, SKYRIZI, STRENSIQ, TAVNEOS, TREMFYA, UPLIZNA, XELJANZ 6
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