Healthcare provider profile · identity verified

Darrell Robert Mease, M.D.

Allopathic & Osteopathic Physicians|Family Medicine · JAY, OK · NPI 1952377442

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 Darrell Robert Mease, M.D. received $502.40 in general payments during 2025 across 24 reported records.

Amgen Inc. accounted for 39.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 12 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Gemtesa, Mounjaro, Vraylar.

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 32 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 81 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 VRAYLAR as an associated drug or biological on 377741 records involving 62704 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Vraylar 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 48 claims for Jardiance 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 100 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 93 claims for Trulicity by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Gemtesa by this doctor in 2024.

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

Payment overview · 2025

General Payments

$502.40

24 reported records · 10 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 $195.9739.0%92025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $84.9716.9%42025
ABBVIE INC. Unresolved — no canonical attribution shown $70.5914.1%42025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$32.036.4%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $23.534.7%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $22.914.6%12025
Viatris Specialty LLC Unresolved — no canonical attribution shown $21.734.3%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$21.114.2%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $16.103.2%12025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $13.462.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$502.4024

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
REPATHA
Normalized: repatha
Biological Amgen Inc. $195.97 9 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $133.77 6 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $84.97 4 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $41.22 2 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $29.37 2 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $23.53 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $22.91 1 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $21.73 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $21.58 1 2025
Source payment records
INTERSTIM
Normalized: interstim
Device Medtronic, Inc. $21.11 1 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $16.10 1 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $13.46 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
GEMTESA
gemtesa
2025 Gemtesa 2024 19
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 100 exact normalized Medicare Part D
VRAYLAR
vraylar
2025 Vraylar 2024 25
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
32 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
81 20
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 VRAYLAR
open payments reported associated product
CMS Open Payments — General Payments
377741 supporting records · 62704 recipient NPIs · example record 1201352550
Vraylar · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
48 12
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
100 21
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
93 16
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
19 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
Atorvastatin CalciumAtorvastatin Calcium614143
Levothyroxine SodiumLevothyroxine Sodium603107
Pantoprazole SodiumPantoprazole Sodium44594
OmeprazoleOmeprazole42393
BaclofenBaclofen41192
TopiramateTopiramate39184
SpironolactoneSpironolactone38994
GabapentinGabapentin36387
FurosemideFurosemide34173
Rosuvastatin CalciumRosuvastatin Calcium33888
Albuterol Sulfate HfaAlbuterol Sulfate330112
LisinoprilLisinopril32471
Metoprolol TartrateMetoprolol Tartrate28659
Trazodone HclTrazodone Hcl28354
Amlodipine BesylateAmlodipine Besylate27462
Fluoxetine HclFluoxetine Hcl27349
Liothyronine SodiumLiothyronine Sodium26566
Tamsulosin HclTamsulosin Hcl25851
Losartan PotassiumLosartan Potassium25065
Escitalopram OxalateEscitalopram Oxalate24347
FamotidineFamotidine24256
EliquisApixaban22237
FinasterideFinasteride18230
Metformin HclMetformin Hcl17946
Tramadol HclTramadol Hcl17146
Metoprolol SuccinateMetoprolol Succinate17035
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen16935
ClopidogrelClopidogrel Bisulfate16842
SimvastatinSimvastatin16127
LevetiracetamLevetiracetam15719
Potassium ChloridePotassium Chloride15634
Quetiapine FumarateQuetiapine Fumarate15235
EzetimibeEzetimibe14725
Diclofenac SodiumDiclofenac Sodium13839
Fluticasone PropionateFluticasone Propionate13351
OzempicSemaglutide13327
CarvedilolCarvedilol13224
CefdinirCefdinir13183
Metformin Hcl ErMetformin Hcl12634
Breztri AerosphereBudesonide/Glycopyr/Formoterol12537
Sertraline HclSertraline Hcl12526
MeloxicamMeloxicam12435
HydrochlorothiazideHydrochlorothiazide12331
Pioglitazone HclPioglitazone Hcl12333
AllopurinolAllopurinol11624
AripiprazoleAripiprazole11617
PrednisonePrednisone11673
Memantine HclMemantine Hcl11225
Montelukast SodiumMontelukast Sodium10621
Trelegy ElliptaFluticasone/Umeclidin/Vilanter10523
SymbicortBudesonide/Formoterol Fumarate10228
MounjaroTirzepatide10021
Duloxetine HclDuloxetine Hcl9919
Doxycycline HyclateDoxycycline Hyclate9767
Hydroxychloroquine SulfateHydroxychloroquine Sulfate9623
Metoclopramide HclMetoclopramide Hcl9624
Pramipexole DihydrochloridePramipexole Di-Hcl9623
TrulicityDulaglutide9316
Buspirone HclBuspirone Hcl9213
Hydroxyzine HclHydroxyzine Hcl8926
Doxazosin MesylateDoxazosin Mesylate8819
AlprazolamAlprazolam8625
Np ThyroidThyroid,pork8616
Citalopram HbrCitalopram Hydrobromide8418
CelecoxibCelecoxib8318
NaproxenNaproxen8221
LinzessLinaclotide8120
MetolazoneMetolazone8116
Mometasone FuroateMometasone Furoate8144
Tizanidine HclTizanidine Hcl7818
ValsartanValsartan7516
Terazosin HclTerazosin Hcl7415
Testosterone CypionateTestosterone Cypionate7426
AzithromycinAzithromycin7356
Ondansetron OdtOndansetron7237
XareltoRivaroxaban7014
OxcarbazepineOxcarbazepine66suppressed
GlipizideGlipizide6316
LamotrigineLamotrigine62suppressed
Raloxifene HclRaloxifene Hcl6212
Cyclobenzaprine HclCyclobenzaprine Hcl6115
Bupropion Hcl SrBupropion Hcl6012
Dexlansoprazole DrDexlansoprazole6013
Nebivolol HclNebivolol Hcl5913
Amitriptyline HclAmitriptyline Hcl5811
Dicyclomine HclDicyclomine Hcl5818
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen5812
AnastrozoleAnastrozole5613
Benazepril HclBenazepril Hcl55suppressed
Divalproex SodiumDivalproex Sodium55suppressed
Amiodarone HclAmiodarone Hcl5416
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst5432
RamiprilRamipril54suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl53suppressed
MyrbetriqMirabegron5311
Donepezil HclDonepezil Hcl5211
JanuviaSitagliptin Phosphate4912
MethotrexateMethotrexate Sodium49suppressed
Warfarin SodiumWarfarin Sodium4912
JardianceEmpagliflozin4812
ProgesteroneProgesterone, Micronized48suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4841
CephalexinCephalexin4638
FluconazoleFluconazole4629
Ropinirole HclRopinirole Hcl4611
DiazepamDiazepam45suppressed
EstradiolEstradiol45suppressed
RisperidoneRisperidone44suppressed
Bupropion XlBupropion Hcl42suppressed
DigoxinDigoxin42suppressed
RexultiBrexpiprazole41suppressed
SucralfateSucralfate41suppressed
SulindacSulindac4012
TrintellixVortioxetine Hydrobromide40suppressed
Acetaminophen-CodeineAcetaminophen With Codeine38suppressed
Diclofenac PotassiumDiclofenac Potassium3812
Ipratropium BromideIpratropium Bromide3821
Pravastatin SodiumPravastatin Sodium38suppressed
PregabalinPregabalin38suppressed
ClonazepamClonazepam37suppressed
FarxigaDapagliflozin Propanediol37suppressed
KetoconazoleKetoconazole3616
LidocaineLidocaine36suppressed
PrimidonePrimidone36suppressed
EntrestoSacubitril/Valsartan35suppressed
EszopicloneEszopiclone3512
RivastigmineRivastigmine35suppressed
DexamethasoneDexamethasone3431
Fludrocortisone AcetateFludrocortisone Acetate34suppressed
OlanzapineOlanzapine34suppressed
Promethazine HclPromethazine Hcl34suppressed
Armour ThyroidThyroid,pork32suppressed
Clonidine HclClonidine Hcl32suppressed
Hydroxyzine PamoateHydroxyzine Pamoate3215
Lurasidone HclLurasidone Hcl32suppressed
Venlafaxine Hcl ErVenlafaxine Hcl32suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol31suppressed
Repatha SureclickEvolocumab31suppressed
Repatha SyringeEvolocumab31suppressed
Solifenacin SuccinateSolifenacin Succinate31suppressed
PaxlovidNirmatrelvir/Ritonavir2929
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2826
Bupropion HclBupropion Hcl28suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate28suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine28suppressed
Doxepin HclDoxepin Hcl28suppressed
MirtazapineMirtazapine28suppressed
Oxybutynin ChlorideOxybutynin Chloride28suppressed
Sumatriptan SuccinateSumatriptan Succinate28suppressed
Enalapril MaleateEnalapril Maleate27suppressed
Naltrexone HclNaltrexone Hcl27suppressed
AtenololAtenolol26suppressed
Carbidopa-LevodopaCarbidopa/Levodopa26suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium26suppressed
Vitamin D2Ergocalciferol (Vitamin D2)25suppressed
VraylarCariprazine Hcl25suppressed
IbuprofenIbuprofen23suppressed
RoflumilastRoflumilast23suppressed
Ventolin HfaAlbuterol Sulfate23suppressed
GemfibrozilGemfibrozil22suppressed
Meclizine HclMeclizine Hcl22suppressed
Propranolol HclPropranolol Hcl22suppressed
BumetanideBumetanide21suppressed
Chlorhexidine GluconateChlorhexidine Gluconate21suppressed
Janumet XrSitagliptin Phos/Metformin Hcl21suppressed
Levemir FlexpenInsulin Detemir21suppressed
LorazepamLorazepam21suppressed
Ondansetron HclOndansetron Hcl2112
Atomoxetine HclAtomoxetine Hcl20suppressed
Calcium AcetateCalcium Acetate20suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride20suppressed
NabumetoneNabumetone20suppressed
NystatinNystatin2012
PentoxifyllinePentoxifylline20suppressed
Terbinafine HclTerbinafine Hcl20suppressed
ConstuloseLactulose19suppressed
Desmopressin AcetateDesmopressin Acetate19suppressed
DuleraMometasone/Formoterol19suppressed
GemtesaVibegron19suppressed
Megestrol AcetateMegestrol Acetate19suppressed
Midodrine HclMidodrine Hcl19suppressed
Paroxetine HclParoxetine Hcl19suppressed
TobramycinTobramycin1911
ChlorthalidoneChlorthalidone18suppressed
FycompaPerampanel18suppressed
Lithium CarbonateLithium Carbonate18suppressed
LubiprostoneLubiprostone18suppressed
Oxybutynin Chloride ErOxybutynin Chloride18suppressed
Topiramate ErTopiramate18suppressed
Trijardy XrEmpaglifloz/Linaglip/Metformin18suppressed
AcyclovirAcyclovir17suppressed
Azelastine HclAzelastine Hcl17suppressed
Benztropine MesylateBenztropine Mesylate17suppressed
Glipizide ErGlipizide17suppressed
Hydralazine HclHydralazine Hcl16suppressed
MethimazoleMethimazole16suppressed
Sildenafil CitrateSildenafil Citrate16suppressed
Zolpidem TartrateZolpidem Tartrate16suppressed
CiclopiroxCiclopirox15suppressed
Ciprofloxacin HclCiprofloxacin Hcl1514
Comfort Ez Pen NeedlePen Needle, Diabetic15suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro15suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate15suppressed
NitroglycerinNitroglycerin15suppressed
LactuloseLactulose14suppressed
LeflunomideLeflunomide14suppressed
Alendronate SodiumAlendronate Sodium13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril13suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate13suppressed
Ciprofloxacin-DexamethasoneCiprofloxacin Hcl/Dexameth13suppressed
Folic AcidFolic Acid13suppressed
Gentamicin SulfateGentamicin Sulfate13suppressed
Guanfacine HclGuanfacine Hcl13suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate13suppressed
Lidocaine-PrilocaineLidocaine/Prilocaine1312
MetronidazoleMetronidazole13suppressed
ValacyclovirValacyclovir Hcl13suppressed
VascepaIcosapent Ethyl13suppressed
Advair HfaFluticasone Propion/Salmeterol12suppressed
BrilintaTicagrelor12suppressed
CimetidineCimetidine12suppressed
Dropsafe Prep PadsAlcohol Antiseptic Pads12suppressed
Enbrel SureclickEtanercept12suppressed
FenofibrateFenofibrate12suppressed
Fluvoxamine MaleateFluvoxamine Maleate12suppressed
LacosamideLacosamide12suppressed
LevofloxacinLevofloxacin1211
MethocarbamolMethocarbamol12suppressed
Minocycline HclMinocycline Hcl12suppressed
Spiriva HandihalerTiotropium Bromide12suppressed
Xeljanz XrTofacitinib Citrate12suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr11suppressed
GlimepirideGlimepiride11suppressed
HydrocortisoneHydrocortisone11suppressed
LevemirInsulin Detemir11suppressed
Novolog FlexpenInsulin Aspart11suppressed
Praluent PenAlirocumab11suppressed

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 $502.40 · 24 records Amgen Inc. Auvelity, Cologuard Collection Kit, FANAPT, GEMTESA, INTERSTIM, MOUNJARO, OTEZLA, QULIPTA, REPATHA, UBRELVY, VRAYLAR, YUPELRI 7
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