Healthcare provider profile · identity verified

Gregory N Haase, DO

Allopathic & Osteopathic Physicians|Internal Medicine · WARSAW, IN · NPI 1851357032

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 Gregory N Haase, DO received $173.23 in general payments during 2025 across 10 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 33.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 8 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Verquvo.

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 ARMOUR THYROID as an associated drug or biological on 50 records involving 11 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Armour Thyroid 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 18 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 75 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 BRILINTA as an associated drug or biological on 993 records involving 512 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Brilinta 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 55 claims for Farxiga 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 SYMBICORT as an associated drug or biological on 71 records involving 51 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Symbicort by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 159 claims for Jardiance by this doctor in 2024.

Merck Sharp & Dohme 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 VERQUVO as an associated drug or biological on 38060 records involving 12268 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Verquvo 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 309 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$173.23

10 reported records · 6 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
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $58.3333.7%32025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $55.2031.9%32025
ABBVIE INC. Unresolved — no canonical attribution shown $16.219.4%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.598.4%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $14.478.3%12025
PFIZER INC. Unresolved — no canonical attribution shown $14.438.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$173.2310

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
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $58.33 3 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $55.20 3 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $16.21 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $16.21 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $14.59 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $14.47 1 2025
Source payment records
VERQUVO
Normalized: verquvo
Drug Merck Sharp & Dohme LLC $14.47 1 2025
Source payment records
VYNDAQEL
Normalized: vyndaqel
Drug PFIZER INC. $14.43 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
FARXIGA
farxiga
2025 Farxiga 2024 55 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 159 exact normalized Medicare Part D
VERQUVO
verquvo
2025 Verquvo 2024 20
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 ARMOUR THYROID
open payments reported associated product
CMS Open Payments — General Payments
50 supporting records · 11 recipient NPIs · example record 1201517088
Armour Thyroid · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
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
18 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
75 23
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 BRILINTA
open payments reported associated product
CMS Open Payments — General Payments
993 supporting records · 512 recipient NPIs · example record 1206131430
Brilinta · 2024
Exact normalized brand match · 1 Part D row
11 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
55 12
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 SYMBICORT
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 51 recipient NPIs · example record 1206132610
Symbicort · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
159 52
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 VERQUVO
open payments reported associated product
CMS Open Payments — General Payments
38060 supporting records · 12268 recipient NPIs · example record 1237992208
Verquvo · 2024
Exact normalized brand match · 1 Part D row
20 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
309 73

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 Sodium832227
Amlodipine BesylateAmlodipine Besylate659173
Atorvastatin CalciumAtorvastatin Calcium633187
Metoprolol SuccinateMetoprolol Succinate560162
Losartan PotassiumLosartan Potassium540165
Rosuvastatin CalciumRosuvastatin Calcium446130
GabapentinGabapentin437124
Potassium ChloridePotassium Chloride433126
LisinoprilLisinopril397102
Pantoprazole SodiumPantoprazole Sodium395117
Metformin HclMetformin Hcl344111
FurosemideFurosemide34099
OmeprazoleOmeprazole32991
EliquisApixaban30973
CarvedilolCarvedilol30194
Trazodone HclTrazodone Hcl29787
Montelukast SodiumMontelukast Sodium28386
Tamsulosin HclTamsulosin Hcl27882
Albuterol Sulfate HfaAlbuterol Sulfate25175
ClopidogrelClopidogrel Bisulfate24173
SpironolactoneSpironolactone22776
OzempicSemaglutide22644
Metoprolol TartrateMetoprolol Tartrate22168
MounjaroTirzepatide21935
FamotidineFamotidine20168
Sertraline HclSertraline Hcl19456
SimvastatinSimvastatin19153
Duloxetine HclDuloxetine Hcl18761
GlimepirideGlimepiride18655
PrednisonePrednisone16781
Trelegy ElliptaFluticasone/Umeclidin/Vilanter16440
JardianceEmpagliflozin15952
MeloxicamMeloxicam15752
HydrochlorothiazideHydrochlorothiazide14647
Warfarin SodiumWarfarin Sodium14225
Olmesartan MedoxomilOlmesartan Medoxomil13834
Lantus SolostarInsulin Glargine,hum.Rec.Anlog13742
Pravastatin SodiumPravastatin Sodium12536
Venlafaxine Hcl ErVenlafaxine Hcl12536
Fluticasone PropionateFluticasone Propionate11844
CelecoxibCelecoxib10934
Hydroxyzine PamoateHydroxyzine Pamoate10739
EzetimibeEzetimibe10633
Clonidine HclClonidine Hcl9728
Citalopram HbrCitalopram Hydrobromide9629
Escitalopram OxalateEscitalopram Oxalate9620
AllopurinolAllopurinol9530
Vitamin D2Ergocalciferol (Vitamin D2)9222
Bupropion XlBupropion Hcl8923
Spironolactone-HctzSpironolact/Hydrochlorothiazid8532
EntrestoSacubitril/Valsartan8321
XareltoRivaroxaban8118
CefdinirCefdinir7972
Cyclobenzaprine HclCyclobenzaprine Hcl7928
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide7621
SynthroidLevothyroxine Sodium7523
Buspirone HclBuspirone Hcl7123
Fluoxetine HclFluoxetine Hcl7119
Metformin Hcl ErMetformin Hcl7023
Isosorbide Mononitrate ErIsosorbide Mononitrate6918
Doxycycline HyclateDoxycycline Hyclate6853
Alendronate SodiumAlendronate Sodium6520
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6217
Memantine HclMemantine Hcl61suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium6018
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid6017
MirtazapineMirtazapine5918
AtenololAtenolol5717
MethocarbamolMethocarbamol5726
Midodrine HclMidodrine Hcl5716
Meclizine HclMeclizine Hcl5627
FarxigaDapagliflozin Propanediol5512
Quetiapine FumarateQuetiapine Fumarate5512
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim5550
TorsemideTorsemide5519
FenofibrateFenofibrate5313
Breztri AerosphereBudesonide/Glycopyr/Formoterol5021
FebuxostatFebuxostat50suppressed
GemtesaVibegron5018
SucralfateSucralfate5017
Diltiazem 24hr Er (Cd)Diltiazem Hcl4914
Terbinafine HclTerbinafine Hcl4911
GlyxambiEmpagliflozin/Linagliptin4715
Ropinirole HclRopinirole Hcl4611
Ondansetron OdtOndansetron4532
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4437
FinasterideFinasteride4314
FenofibrateFenofibrate Nanocrystallized4213
Hydralazine HclHydralazine Hcl4215
TelmisartanTelmisartan4211
Cyanocobalamin InjectionCyanocobalamin (Vitamin B-12)41suppressed
Klor-Con M20Potassium Chloride4115
NitroglycerinNitroglycerin3927
GlipizideGlipizide3714
Humalog Kwikpen U-100Insulin Lispro3719
Donepezil HclDonepezil Hcl36suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic3614
ProliaDenosumab3523
LivaloPitavastatin Calcium34suppressed
TrulicityDulaglutide3413
CephalexinCephalexin3330
Hydroxyzine HclHydroxyzine Hcl3315
LantusInsulin Glargine,hum.Rec.Anlog33suppressed
AzithromycinAzithromycin3229
Dicyclomine HclDicyclomine Hcl3212
Enalapril MaleateEnalapril Maleate32suppressed
LovastatinLovastatin32suppressed
MyrbetriqMirabegron3112
Ondansetron HclOndansetron Hcl3112
Promethazine HclPromethazine Hcl31suppressed
Amiodarone HclAmiodarone Hcl30suppressed
Ciprofloxacin HclCiprofloxacin Hcl3029
LactuloseLactulose3015
Novolog FlexpenInsulin Aspart3014
Glipizide ErGlipizide29suppressed
TradjentaLinagliptin29suppressed
Folic AcidFolic Acid2813
JanuviaSitagliptin Phosphate28suppressed
Tizanidine HclTizanidine Hcl28suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2817
RamiprilRamipril27suppressed
Betamethasone DipropionateBetamethasone Dipropionate2614
Candesartan CilexetilCandesartan Cilexetil26suppressed
Dilt-XrDiltiazem Hcl26suppressed
Dropsafe Prep PadsAlcohol Antiseptic Pads26suppressed
LubiprostoneLubiprostone26suppressed
Amitriptyline HclAmitriptyline Hcl25suppressed
BaclofenBaclofen25suppressed
LevetiracetamLevetiracetam25suppressed
Repatha SureclickEvolocumab25suppressed
MethimazoleMethimazole24suppressed
Breo ElliptaFluticasone/Vilanterol23suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2316
MethylprednisoloneMethylprednisolone2322
Propranolol HclPropranolol Hcl23suppressed
Ventolin HfaAlbuterol Sulfate23suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate22suppressed
IrbesartanIrbesartan22suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride22suppressed
Megestrol AcetateMegestrol Acetate2213
Pioglitazone HclPioglitazone Hcl22suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl22suppressed
MethotrexateMethotrexate Sodium21suppressed
Oxybutynin ChlorideOxybutynin Chloride21suppressed
SymbicortBudesonide/Formoterol Fumarate21suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog21suppressed
ValsartanValsartan21suppressed
MetolazoneMetolazone20suppressed
Nebivolol HclNebivolol Hcl20suppressed
Nortriptyline HclNortriptyline Hcl20suppressed
PrimidonePrimidone20suppressed
TopiramateTopiramate20suppressed
VerquvoVericiguat20suppressed
Paroxetine HclParoxetine Hcl19suppressed
Propranolol Hcl ErPropranolol Hcl19suppressed
AripiprazoleAripiprazole18suppressed
Azelastine HclAzelastine Hcl1811
Bupropion HclBupropion Hcl18suppressed
HydrocortisoneHydrocortisone18suppressed
LinzessLinaclotide18suppressed
Terazosin HclTerazosin Hcl18suppressed
Dexlansoprazole DrDexlansoprazole17suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol17suppressed
LatanoprostLatanoprost17suppressed
Levemir FlexpenInsulin Detemir17suppressed
ValacyclovirValacyclovir Hcl1713
Verapamil ErVerapamil Hcl17suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog16suppressed
Benazepril HclBenazepril Hcl16suppressed
Clobetasol PropionateClobetasol Propionate16suppressed
ColchicineColchicine1611
Ibandronate SodiumIbandronate Sodium16suppressed
Insulin LisproInsulin Lispro16suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide16suppressed
TrulancePlecanatide16suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic16suppressed
Bupropion Hcl SrBupropion Hcl15suppressed
Cholestyramine LightCholestyramine15suppressed
FluconazoleFluconazole15suppressed
GemfibrozilGemfibrozil15suppressed
NystatinNystatin1511
Oxybutynin Chloride ErOxybutynin Chloride15suppressed
DigoxinDigoxin14suppressed
EstradiolEstradiol14suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters14suppressed
Spiriva RespimatTiotropium Bromide14suppressed
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml14suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril13suppressed
ChlorthalidoneChlorthalidone13suppressed
CholestyramineCholestyramine (With Sugar)13suppressed
IbuprofenIbuprofen13suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst13suppressed
Tresiba Flextouch U-100Insulin Degludec13suppressed
Tresiba Flextouch U-200Insulin Degludec13suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic13suppressed
WegovySemaglutide13suppressed
AmoxicillinAmoxicillin12suppressed
Armour ThyroidThyroid,pork12suppressed
Asmanex HfaMometasone Furoate12suppressed
Balsalazide DisodiumBalsalazide Disodium12suppressed
Doxepin HclDoxepin Hcl12suppressed
Droplet Pen NeedlePen Needle, Diabetic12suppressed
Memantine Hcl ErMemantine Hcl12suppressed
NexletolBempedoic Acid12suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
BrilintaTicagrelor11suppressed
BumetanideBumetanide11suppressed
Colesevelam HclColesevelam Hcl11suppressed
Humulin RInsulin Regular, Human11suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro11suppressed
KetoconazoleKetoconazole11suppressed
LevofloxacinLevofloxacin11suppressed
LidocaineLidocaine11suppressed
Nifedipine ErNifedipine11suppressed
NitrofurantoinNitrofurantoin Macrocrystal11suppressed
Ultra-Fine Micro Pen NeedlePen Needle, Diabetic11suppressed

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 $173.23 · 10 records Bayer Healthcare Pharmaceuticals Inc. CAPVAXIVE, FARXIGA, JARDIANCE, Kerendia, QULIPTA, UBRELVY, VERQUVO, VYNDAQEL 9
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