Healthcare provider profile · identity verified

Eric A Duffield, P.A

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · LANSING, MI · NPI 1245427004

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 Eric A Duffield, P.A received $930.75 in general payments during 2025 across 50 reported records.

ABBVIE INC. accounted for 26.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 26 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Mounjaro, Ozempic, Trelegy Ellipta.

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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 98 claims for Trelegy Ellipta 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 XARELTO as an associated drug or biological on 24 records involving 23 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Xarelto by this doctor in 2024.

Lilly USA, 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 MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Mounjaro by this doctor in 2024.

Lilly USA, 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Trulicity by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$930.75

50 reported records · 17 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
ABBVIE INC. Unresolved — no canonical attribution shown $250.0026.9%172025
Novo Nordisk Inc Unresolved — no canonical attribution shown $102.5111.0%52025
UCB, Inc. Unresolved — no canonical attribution shown $94.9310.2%32025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $90.689.7%52025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $70.847.6%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $47.065.1%32025
Insmed, Inc. Unresolved — no canonical attribution shown $43.084.6%22025
Grifols USA, LLC Unresolved — no canonical attribution shown $38.724.2%22025
GENZYME CORPORATION Unresolved — no canonical attribution shown $35.313.8%12025
Baxter Healthcare Unresolved — no canonical attribution shown $25.442.7%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $20.942.2%12025
VERTEX PHARMACEUTICALS INCORPORATED Unresolved — no canonical attribution shown $20.872.2%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $20.062.2%12025
Electromed, Inc. Unresolved — no canonical attribution shown $18.632.0%12025
ConvaTec Inc. Unresolved — no canonical attribution shown $18.242.0%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $17.141.8%12025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $16.301.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$930.7550

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
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $122.75 9 2025
Source payment records
Bimzelx
Normalized: bimzelx
Biological UCB, Inc. $94.93 3 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $83.85 4 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $83.85 4 2025
Source payment records
OFEV
Normalized: ofev
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $74.02 4 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $70.84 4 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $53.98 3 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $49.00 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $47.06 3 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $46.60 4 2025
Source payment records
Arikayce
Normalized: arikayce
Drug Insmed, Inc. $43.08 2 2025
Source payment records
Prolastin-C Liquid
Normalized: prolastin c liquid
Biological Grifols USA, LLC $38.72 2 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION $35.31 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $32.11 2 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $31.65 2 2025
Source payment records
Hillrom - Vest System Model 105 Home Care
Normalized: hillrom vest system model 105 home care
Device Baxter Healthcare $25.44 1 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $25.10 1 2025
Source payment records
GLASSIA
Normalized: glassia
Biological Takeda Pharmaceuticals U.S.A., Inc. $20.94 1 2025
Source payment records
JOURNAVX
Normalized: journavx
Drug VERTEX PHARMACEUTICALS INCORPORATED $20.87 1 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $20.06 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $18.66 1 2025
Source payment records
SMARTVEST
Normalized: smartvest
Device Electromed, Inc. $18.63 1 2025
Source payment records
INNOVAMATRIX AC
Normalized: innovamatrix ac
Device ConvaTec Inc. $18.24 1 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $17.14 1 2025
Source payment records
JASCAYD
Normalized: jascayd
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $16.66 1 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $16.30 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
MOUNJARO
mounjaro
2025 Mounjaro 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 29
Beneficiary count suppressed
exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 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
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
98 33
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 XARELTO
open payments reported associated product
CMS Open Payments — General Payments
24 supporting records · 23 recipient NPIs · example record 1174259978
Xarelto · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
29 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
Albuterol Sulfate HfaAlbuterol Sulfate24757
Levothyroxine SodiumLevothyroxine Sodium22958
OmeprazoleOmeprazole19659
Amlodipine BesylateAmlodipine Besylate18149
Atorvastatin CalciumAtorvastatin Calcium16452
Montelukast SodiumMontelukast Sodium14440
Losartan PotassiumLosartan Potassium14036
LisinoprilLisinopril13137
Rosuvastatin CalciumRosuvastatin Calcium12425
GabapentinGabapentin10924
Metformin HclMetformin Hcl10629
Trelegy ElliptaFluticasone/Umeclidin/Vilanter9833
Potassium ChloridePotassium Chloride9426
FurosemideFurosemide8122
SimvastatinSimvastatin8123
CarvedilolCarvedilol7417
Fluticasone-SalmeterolFluticasone Propion/Salmeterol7328
Metoprolol TartrateMetoprolol Tartrate7016
PrednisonePrednisone7042
Duloxetine HclDuloxetine Hcl6816
Fluticasone PropionateFluticasone Propionate6827
Pantoprazole SodiumPantoprazole Sodium6523
Zolpidem TartrateZolpidem Tartrate6517
Trazodone HclTrazodone Hcl6017
EliquisApixaban5414
AllopurinolAllopurinol5012
HydrochlorothiazideHydrochlorothiazide5016
AlprazolamAlprazolam4915
Sertraline HclSertraline Hcl4912
Escitalopram OxalateEscitalopram Oxalate4712
Citalopram HbrCitalopram Hydrobromide45suppressed
ClonazepamClonazepam45suppressed
Breo ElliptaFluticasone/Vilanterol4312
FamotidineFamotidine4112
Tamsulosin HclTamsulosin Hcl4013
Metoprolol SuccinateMetoprolol Succinate3814
RoflumilastRoflumilast37suppressed
BumetanideBumetanide3611
Fluoxetine HclFluoxetine Hcl36suppressed
Alendronate SodiumAlendronate Sodium35suppressed
LorazepamLorazepam34suppressed
SpironolactoneSpironolactone3412
FluconazoleFluconazole33suppressed
AcyclovirAcyclovir31suppressed
AzithromycinAzithromycin3116
Sumatriptan SuccinateSumatriptan Succinate31suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3013
IbuprofenIbuprofen3015
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide30suppressed
Ventolin HfaAlbuterol Sulfate3015
OzempicSemaglutide29suppressed
PregabalinPregabalin29suppressed
Warfarin SodiumWarfarin Sodium29suppressed
Ropinirole HclRopinirole Hcl28suppressed
BaclofenBaclofen27suppressed
NystatinNystatin2714
SymbicortBudesonide/Formoterol Fumarate27suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol26suppressed
ClopidogrelClopidogrel Bisulfate26suppressed
Ondansetron OdtOndansetron26suppressed
Paroxetine HclParoxetine Hcl26suppressed
LovastatinLovastatin25suppressed
Spiriva RespimatTiotropium Bromide25suppressed
AtenololAtenolol24suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate2414
LevofloxacinLevofloxacin2417
Tramadol HclTramadol Hcl24suppressed
FenofibrateFenofibrate,micronized23suppressed
Propranolol HclPropranolol Hcl23suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2219
Tiotropium BromideTiotropium Bromide21suppressed
TopiramateTopiramate21suppressed
MeloxicamMeloxicam19suppressed
Pravastatin SodiumPravastatin Sodium19suppressed
Buspirone HclBuspirone Hcl18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl18suppressed
Donepezil HclDonepezil Hcl18suppressed
EstradiolEstradiol18suppressed
Incruse ElliptaUmeclidinium Bromide18suppressed
Vilazodone HclVilazodone Hcl18suppressed
NaproxenNaproxen17suppressed
Atrovent HfaIpratropium Bromide16suppressed
CelecoxibCelecoxib16suppressed
Dicyclomine HclDicyclomine Hcl16suppressed
GlimepirideGlimepiride16suppressed
Glipizide ErGlipizide16suppressed
HaloperidolHaloperidol16suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Doxazosin MesylateDoxazosin Mesylate15suppressed
MounjaroTirzepatide15suppressed
TrulicityDulaglutide15suppressed
Vitamin D2Ergocalciferol (Vitamin D2)15suppressed
AmoxicillinAmoxicillin14suppressed
Bupropion HclBupropion Hcl13suppressed
Dexmethylphenidate HclDexmethylphenidate Hcl13suppressed
FenofibrateFenofibrate13suppressed
Minocycline HclMinocycline Hcl13suppressed
AripiprazoleAripiprazole12suppressed
Enalapril MaleateEnalapril Maleate12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Nifedipine ErNifedipine12suppressed
TradjentaLinagliptin12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
XareltoRivaroxaban12suppressed
Doxepin HclDoxepin Hcl11suppressed
FinasterideFinasteride11suppressed
GemfibrozilGemfibrozil11suppressed
Labetalol HclLabetalol Hcl11suppressed
Methylphenidate ErMethylphenidate Hcl11suppressed
MirtazapineMirtazapine11suppressed
MyrbetriqMirabegron11suppressed
PrimidonePrimidone11suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl11suppressed
Testosterone CypionateTestosterone Cypionate11suppressed
TorsemideTorsemide11suppressed

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 $930.75 · 50 records ABBVIE INC. AREXVY, Arikayce, Auvelity, Bimzelx, CAPLYTA, DUPIXENT, GLASSIA, Hillrom - Vest System Model 105 Home Care, INNOVAMATRIX AC, JASCAYD, JOURNAVX, MOUNJARO, OFEV, Ozempic, Prolastin-C Liquid, QULIPTA, RINVOQ, Rybelsus, SKYRIZI, SMARTVEST, TRELEGY ELLIPTA, TREMFYA, UBRELVY, VRAYLAR, Wegovy, ZEPBOUND 5
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