Healthcare provider profile · identity verified

James P Mackessy, MD

Family Practice · COLUMBUS, OH · NPI 1841226727

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium683153
LisinoprilLisinopril35382
Levothyroxine SodiumLevothyroxine Sodium35181
Amlodipine BesylateAmlodipine Besylate29681
Losartan PotassiumLosartan Potassium26163
OmeprazoleOmeprazole23645
EliquisApixaban18230
SimvastatinSimvastatin17048
GabapentinGabapentin15434
HydrochlorothiazideHydrochlorothiazide15246
Donepezil HclDonepezil Hcl15122
Metformin HclMetformin Hcl14538
Metoprolol SuccinateMetoprolol Succinate14551
Tamsulosin HclTamsulosin Hcl13337
ClopidogrelClopidogrel Bisulfate12821
Sertraline HclSertraline Hcl12530
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12031
Pantoprazole SodiumPantoprazole Sodium11726
FurosemideFurosemide11132
PrednisonePrednisone10048
AtenololAtenolol9016
Tramadol HclTramadol Hcl8920
Albuterol Sulfate HfaAlbuterol Sulfate8732
Duloxetine HclDuloxetine Hcl7614
Zolpidem TartrateZolpidem Tartrate7618
Escitalopram OxalateEscitalopram Oxalate7121
FinasterideFinasteride7018
Potassium ChloridePotassium Chloride7012
Metoprolol TartrateMetoprolol Tartrate6716
Rosuvastatin CalciumRosuvastatin Calcium6524
Fluticasone PropionateFluticasone Propionate6417
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6415
Memantine HclMemantine Hcl6413
AllopurinolAllopurinol6316
CarvedilolCarvedilol6213
Pravastatin SodiumPravastatin Sodium6211
MirtazapineMirtazapine61suppressed
Quetiapine FumarateQuetiapine Fumarate59suppressed
Trazodone HclTrazodone Hcl5918
Citalopram HbrCitalopram Hydrobromide58suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen55suppressed
Hydralazine HclHydralazine Hcl4911
ShingrixVaricella-Zoster Ge/As01b/Pf4946
AlprazolamAlprazolam4814
Buspirone HclBuspirone Hcl4812
Diltiazem 24hr Er (Cd)Diltiazem Hcl47suppressed
OzempicSemaglutide46suppressed
FamotidineFamotidine4412
JardianceEmpagliflozin42suppressed
Divalproex SodiumDivalproex Sodium40suppressed
EzetimibeEzetimibe40suppressed
MeloxicamMeloxicam4017
Montelukast SodiumMontelukast Sodium39suppressed
Alendronate SodiumAlendronate Sodium38suppressed
LatanoprostLatanoprost38suppressed
Fluoxetine HclFluoxetine Hcl3612
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3612
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3624
Bupropion XlBupropion Hcl35suppressed
AzithromycinAzithromycin3429
JanuviaSitagliptin Phosphate32suppressed
SpironolactoneSpironolactone31suppressed
Raloxifene HclRaloxifene Hcl30suppressed
TrulicityDulaglutide30suppressed
Metformin Hcl ErMetformin Hcl29suppressed
GlimepirideGlimepiride28suppressed
Carbidopa-LevodopaCarbidopa/Levodopa26suppressed
Diclofenac SodiumDiclofenac Sodium25suppressed
FenofibrateFenofibrate25suppressed
GlipizideGlipizide25suppressed
Labetalol HclLabetalol Hcl25suppressed
Pioglitazone HclPioglitazone Hcl25suppressed
RisperidoneRisperidone25suppressed
LorazepamLorazepam24suppressed
TopiramateTopiramate24suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid24suppressed
Warfarin SodiumWarfarin Sodium23suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog22suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium22suppressed
Hydroxyzine HclHydroxyzine Hcl22suppressed
Ondansetron HclOndansetron Hcl22suppressed
XareltoRivaroxaban22suppressed
AripiprazoleAripiprazole21suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate21suppressed
OlanzapineOlanzapine21suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen21suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter21suppressed
Methylphenidate HclMethylphenidate Hcl20suppressed
Mometasone FuroateMometasone Furoate20suppressed
BaclofenBaclofen19suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol19suppressed
PerphenazinePerphenazine19suppressed
Bupropion Hcl SrBupropion Hcl18suppressed
ClonazepamClonazepam18suppressed
Meclizine HclMeclizine Hcl1811
Midodrine HclMidodrine Hcl18suppressed
Venlafaxine Hcl ErVenlafaxine Hcl18suppressed
Ciprofloxacin HclCiprofloxacin Hcl17suppressed
Oxybutynin ChlorideOxybutynin Chloride17suppressed
IbuprofenIbuprofen16suppressed
LoperamideLoperamide Hcl16suppressed
SynthroidLevothyroxine Sodium16suppressed
AcyclovirAcyclovir15suppressed
Colestipol HclColestipol Hcl15suppressed
Galantamine ErGalantamine Hbr15suppressed
Methenamine HippurateMethenamine Hippurate15suppressed
Paroxetine HclParoxetine Hcl15suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended15suppressed
Terazosin HclTerazosin Hcl15suppressed
ArexvyRsvpref3 Antigen/As01e/Pf1414
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide14suppressed
Azelastine HclAzelastine Hcl13suppressed
Bethanechol ChlorideBethanechol Chloride13suppressed
CelecoxibCelecoxib13suppressed
ClonidineClonidine13suppressed
Doxycycline HyclateDoxycycline Hyclate1312
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1313
Propranolol HclPropranolol Hcl13suppressed
Triamcinolone AcetonideTriamcinolone Acetonide13suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr12suppressed
BiktarvyBictegrav/Emtricit/Tenofov Ala12suppressed
DuleraMometasone/Formoterol12suppressed
Enalapril MaleateEnalapril Maleate12suppressed
EstradiolEstradiol12suppressed
EszopicloneEszopiclone12suppressed
IndapamideIndapamide12suppressed
LetrozoleLetrozole12suppressed
Ranolazine ErRanolazine12suppressed
Telmisartan-HydrochlorothiazidTelmisartan/Hydrochlorothiazid12suppressed
TenivacTetanus-Diphtheria Toxoids/Pf1212
ValacyclovirValacyclovir Hcl12suppressed
Acetaminophen-CodeineAcetaminophen With Codeine11suppressed
Amiodarone HclAmiodarone Hcl11suppressed
ChlorthalidoneChlorthalidone11suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
FamciclovirFamciclovir11suppressed
FluconazoleFluconazole11suppressed
Nifedipine ErNifedipine11suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed
PregabalinPregabalin11suppressed
Risperidone OdtRisperidone11suppressed
Timolol MaleateTimolol Maleate11suppressed
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
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