Healthcare provider profile · identity verified

Terry A Zarling, M.D.

Cardiology · MUKWONAGO, WI · NPI 1871562298

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
Rosuvastatin CalciumRosuvastatin Calcium1428403
EliquisApixaban860153
Metoprolol SuccinateMetoprolol Succinate828226
Atorvastatin CalciumAtorvastatin Calcium532155
ClopidogrelClopidogrel Bisulfate413122
LisinoprilLisinopril385112
CarvedilolCarvedilol32487
Amlodipine BesylateAmlodipine Besylate30389
Metoprolol TartrateMetoprolol Tartrate24267
Isosorbide Mononitrate ErIsosorbide Mononitrate22665
EzetimibeEzetimibe21060
FurosemideFurosemide19564
Losartan PotassiumLosartan Potassium19357
Warfarin SodiumWarfarin Sodium19245
Diltiazem 24hr Er (Cd)Diltiazem Hcl17846
SpironolactoneSpironolactone13849
HydrochlorothiazideHydrochlorothiazide13238
AtenololAtenolol12436
NitroglycerinNitroglycerin12087
XareltoRivaroxaban9923
Potassium ChloridePotassium Chloride8025
Diltiazem 24hr ErDiltiazem Hcl7923
DigoxinDigoxin7822
SimvastatinSimvastatin7023
Pravastatin SodiumPravastatin Sodium6516
Amiodarone HclAmiodarone Hcl6018
SotalolSotalol Hcl48suppressed
Pantoprazole SodiumPantoprazole Sodium45suppressed
EntrestoSacubitril/Valsartan4311
Ranolazine ErRanolazine4212
BumetanideBumetanide3512
BrilintaTicagrelor31suppressed
RamiprilRamipril31suppressed
IrbesartanIrbesartan30suppressed
ValsartanValsartan30suppressed
AmoxicillinAmoxicillin2923
Hydralazine HclHydralazine Hcl29suppressed
Klor-Con M20Potassium Chloride25suppressed
Olmesartan MedoxomilOlmesartan Medoxomil25suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide21suppressed
Praluent PenAlirocumab21suppressed
Prasugrel HclPrasugrel Hcl21suppressed
Repatha SyringeEvolocumab21suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2013
OmeprazoleOmeprazole18suppressed
DofetilideDofetilide17suppressed
Nebivolol HclNebivolol Hcl17suppressed
FenofibrateFenofibrate Nanocrystallized15suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide15suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid15suppressed
Flecainide AcetateFlecainide Acetate14suppressed
Diltiazem HclDiltiazem Hcl13suppressed
JardianceEmpagliflozin13suppressed
Niacin ErNiacin12suppressed
Repatha SureclickEvolocumab12suppressed
Dilt-XrDiltiazem Hcl11suppressed
Fludrocortisone AcetateFludrocortisone Acetate11suppressed
GemfibrozilGemfibrozil11suppressed
PaceroneAmiodarone 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
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