Healthcare provider profile · identity verified

Dinesh U. Nayak, MD

Allopathic & Osteopathic Physicians|Family Medicine · MANCHESTER, OH · NPI 1932102092

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 Dinesh U. Nayak, MD received $349.92 in general payments during 2025 across 14 reported records.

AstraZeneca Pharmaceuticals LP accounted for 55.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 6 associated products.

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

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 37 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Synthroid 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 FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Farxiga 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Trelegy Ellipta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$349.92

14 reported records · 5 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 $193.4255.3%62025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $76.7521.9%42025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $33.199.5%22025
ABBVIE INC. Unresolved — no canonical attribution shown $30.248.6%12025
Philips North America LLC Unresolved — no canonical attribution shown $16.324.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$349.9214

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
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $116.03 3 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $77.39 3 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $76.75 4 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $33.19 2 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $30.24 1 2025
Source payment records
Vest Therapy Und
Normalized: vest therapy und
Device Philips North America LLC $16.32 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
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 29
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
37 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
24 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
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
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
Levothyroxine SodiumLevothyroxine Sodium28845
GabapentinGabapentin26157
Metformin HclMetformin Hcl22239
Losartan PotassiumLosartan Potassium21440
PrednisonePrednisone20394
LisinoprilLisinopril19235
Amlodipine BesylateAmlodipine Besylate19128
Montelukast SodiumMontelukast Sodium18443
OmeprazoleOmeprazole17638
Atorvastatin CalciumAtorvastatin Calcium15735
Albuterol Sulfate HfaAlbuterol Sulfate15439
HydrochlorothiazideHydrochlorothiazide14926
Potassium ChloridePotassium Chloride14629
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen13131
FurosemideFurosemide12530
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen11756
Tamsulosin HclTamsulosin Hcl11730
GlimepirideGlimepiride11019
Metoprolol TartrateMetoprolol Tartrate10118
Pantoprazole SodiumPantoprazole Sodium10128
Metoprolol SuccinateMetoprolol Succinate9826
ClopidogrelClopidogrel Bisulfate8617
CefdinirCefdinir8253
Ketorolac TromethamineKetorolac Tromethamine7438
MounjaroTirzepatide7411
Cyclobenzaprine HclCyclobenzaprine Hcl7218
Doxycycline HyclateDoxycycline Hyclate7046
Duloxetine HclDuloxetine Hcl7017
Clonidine HclClonidine Hcl6613
Carbidopa-LevodopaCarbidopa/Levodopa6518
DiazepamDiazepam6419
Ropinirole HclRopinirole Hcl6220
Tramadol HclTramadol Hcl6215
Diltiazem 24hr Er (Cd)Diltiazem Hcl6013
Diltiazem HclDiltiazem Hcl5711
CephalexinCephalexin5641
Hydroxyzine HclHydroxyzine Hcl5612
LovastatinLovastatin56suppressed
Testosterone CypionateTestosterone Cypionate5420
Rosuvastatin CalciumRosuvastatin Calcium5313
Tizanidine HclTizanidine Hcl51suppressed
SimvastatinSimvastatin50suppressed
Theophylline ErTheophylline Anhydrous50suppressed
LorazepamLorazepam4920
Dilt-XrDiltiazem Hcl4712
Pravastatin SodiumPravastatin Sodium4711
Sertraline HclSertraline Hcl47suppressed
Warfarin SodiumWarfarin Sodium47suppressed
Clindamycin HclClindamycin Hcl4538
PentoxifyllinePentoxifylline45suppressed
AlprazolamAlprazolam4214
CelecoxibCelecoxib4212
ZafirlukastZafirlukast4011
Diclofenac SodiumDiclofenac Sodium39suppressed
IbuprofenIbuprofen3911
Repatha SureclickEvolocumab39suppressed
TheophyllineTheophylline Anhydrous3821
DigoxinDigoxin37suppressed
LinzessLinaclotide37suppressed
MeloxicamMeloxicam3714
TopiramateTopiramate37suppressed
Amitriptyline HclAmitriptyline Hcl36suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol36suppressed
Metoclopramide HclMetoclopramide Hcl35suppressed
Nifedipine ErNifedipine35suppressed
Buspirone HclBuspirone Hcl33suppressed
CarvedilolCarvedilol33suppressed
EliquisApixaban33suppressed
Ondansetron HclOndansetron Hcl33suppressed
Ciprofloxacin HclCiprofloxacin Hcl3227
NitroglycerinNitroglycerin3118
Acetaminophen-CodeineAcetaminophen With Codeine3015
Trelegy ElliptaFluticasone/Umeclidin/Vilanter29suppressed
Quetiapine FumarateQuetiapine Fumarate27suppressed
AmoxicillinAmoxicillin2515
ClonazepamClonazepam2511
AllopurinolAllopurinol24suppressed
Bupropion XlBupropion Hcl24suppressed
OzempicSemaglutide24suppressed
SynthroidLevothyroxine Sodium24suppressed
Fluticasone PropionateFluticasone Propionate23suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide23suppressed
CarbamazepineCarbamazepine20suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate20suppressed
Donepezil HclDonepezil Hcl19suppressed
MirtazapineMirtazapine19suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18suppressed
Liothyronine SodiumLiothyronine Sodium18suppressed
TorsemideTorsemide18suppressed
Alendronate SodiumAlendronate Sodium17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl17suppressed
BaclofenBaclofen16suppressed
Propranolol HclPropranolol Hcl16suppressed
ColchicineColchicine15suppressed
FinasterideFinasteride15suppressed
FluconazoleFluconazole15suppressed
LamotrigineLamotrigine15suppressed
NystatinNystatin1511
Oxycodone HclOxycodone Hcl15suppressed
Ventolin HfaAlbuterol Sulfate15suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
Escitalopram OxalateEscitalopram Oxalate14suppressed
MethocarbamolMethocarbamol14suppressed
Dexlansoprazole DrDexlansoprazole13suppressed
FamotidineFamotidine13suppressed
Fluoxetine HclFluoxetine Hcl13suppressed
Hydralazine HclHydralazine Hcl13suppressed
Metformin Hcl ErMetformin Hcl13suppressed
NateglinideNateglinide13suppressed
NovologInsulin Aspart13suppressed
PregabalinPregabalin13suppressed
SpironolactoneSpironolactone13suppressed
Ampicillin TrihydrateAmpicillin Trihydrate1212
Clomipramine HclClomipramine Hcl12suppressed
EzetimibeEzetimibe12suppressed
ZonisamideZonisamide12suppressed
Alfuzosin Hcl ErAlfuzosin Hcl11suppressed
AmantadineAmantadine Hcl11suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
Benazepril HclBenazepril Hcl11suppressed
ChlorthalidoneChlorthalidone11suppressed
FarxigaDapagliflozin Propanediol11suppressed
Fluticasone Propionate HfaFluticasone Propionate11suppressed
GlipizideGlipizide11suppressed
LevofloxacinLevofloxacin11suppressed
LinezolidLinezolid11suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11suppressed
PiroxicamPiroxicam11suppressed
ScopolamineScopolamine11suppressed
Trazodone HclTrazodone 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 $349.92 · 14 records AstraZeneca Pharmaceuticals LP AIRSUPRA, AUSTEDO XR, BREZTRI, TRELEGY ELLIPTA, VRAYLAR, Vest Therapy Und 4
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