Healthcare provider profile · identity verified

Craig A Stark, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · DES MOINES, IA · NPI 1245212075

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 Craig A Stark, M.D. received $233.85 in general payments during 2025 across 12 reported records.

ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) accounted for 32.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 7 associated products.

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

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 106 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 571 claims for Farxiga by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ENTRESTO as an associated drug or biological on 9346 records involving 6254 distinct recipient NPIs. Public Medicare Part D data also shows 349 claims for Entresto 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 1867 claims for Eliquis 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 VYNDAMAX as an associated drug or biological on 1880 records involving 1527 distinct recipient NPIs. Public Medicare Part D data also shows 48 claims for Vyndamax 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 VYNDAQEL as an associated drug or biological on 31283 records involving 13357 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Vyndaqel by this doctor in 2024.

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

Payment overview · 2025

General Payments

$233.85

12 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
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) Unresolved — no canonical attribution shown $76.8032.8%52025
Boston Scientific Corporation Unresolved — no canonical attribution shown $52.0422.2%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $44.4119.0%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $28.6312.2%12025
PFIZER INC. Unresolved — no canonical attribution shown $16.086.9%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $15.896.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$233.8512

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
LifeVest
Normalized: lifevest
Device ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $76.80 5 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $44.41 2 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $28.63 1 2025
Source payment records
LUX-Dx Insertable Cardiac Monitor
Normalized: lux dx insertable cardiac monitor
Device Boston Scientific Corporation $28.21 1 2025
Source payment records
WATCHMAN Access System
Normalized: watchman access system
Device Boston Scientific Corporation $23.83 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $16.08 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $15.89 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
ELIQUIS
eliquis
2025 Eliquis 2024 1867 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 571 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
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
106 19
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
571 112
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 ENTRESTO
open payments reported associated product
CMS Open Payments — General Payments
9346 supporting records · 6254 recipient NPIs · example record 1200004797
Entresto · 2024
Exact normalized brand match · 1 Part D row
349 64
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
1867 310
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 VYNDAMAX
open payments reported associated product
CMS Open Payments — General Payments
1880 supporting records · 1527 recipient NPIs · example record 1228795749
Vyndamax · 2024
Exact normalized brand match · 1 Part D row
48 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 VYNDAQEL
open payments reported associated product
CMS Open Payments — General Payments
31283 supporting records · 13357 recipient NPIs · example record 1228794133
Vyndaqel · 2024
Exact normalized brand match · 1 Part D row
18 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
Metoprolol SuccinateMetoprolol Succinate1996518
EliquisApixaban1867310
Atorvastatin CalciumAtorvastatin Calcium1507401
FurosemideFurosemide971249
Repatha SureclickEvolocumab70278
FarxigaDapagliflozin Propanediol571112
CarvedilolCarvedilol565149
EzetimibeEzetimibe558139
ClopidogrelClopidogrel Bisulfate483129
Metoprolol TartrateMetoprolol Tartrate481121
Rosuvastatin CalciumRosuvastatin Calcium479133
XareltoRivaroxaban45180
Losartan PotassiumLosartan Potassium430123
SpironolactoneSpironolactone408114
Amlodipine BesylateAmlodipine Besylate406118
Amiodarone HclAmiodarone Hcl40298
LisinoprilLisinopril374103
Diltiazem 24hr Er (Cd)Diltiazem Hcl36393
EntrestoSacubitril/Valsartan34964
Potassium ChloridePotassium Chloride33886
Labetalol HclLabetalol Hcl33480
NadololNadolol26363
Isosorbide Mononitrate ErIsosorbide Mononitrate25363
Warfarin SodiumWarfarin Sodium22136
JardianceEmpagliflozin22043
HydrochlorothiazideHydrochlorothiazide21864
SotalolSotalol Hcl19248
Praluent PenAlirocumab16924
AtenololAtenolol13839
Ranolazine ErRanolazine12935
Hydralazine HclHydralazine Hcl11632
NitroglycerinNitroglycerin10975
BrilintaTicagrelor10619
DigoxinDigoxin9226
Dabigatran EtexilateDabigatran Etexilate Mesylate8818
Midodrine HclMidodrine Hcl8823
SimvastatinSimvastatin8523
Levothyroxine SodiumLevothyroxine Sodium7828
ChlorthalidoneChlorthalidone6214
Benazepril HclBenazepril Hcl6115
Pravastatin SodiumPravastatin Sodium6118
BumetanideBumetanide5820
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5617
Flecainide AcetateFlecainide Acetate5114
Diltiazem HclDiltiazem Hcl5017
Repatha SyringeEvolocumab48suppressed
VyndamaxTafamidis48suppressed
Clonidine HclClonidine Hcl4613
RamiprilRamipril44suppressed
MetolazoneMetolazone3914
CamzyosMavacamten37suppressed
Bisoprolol FumarateBisoprolol Fumarate3611
Fludrocortisone AcetateFludrocortisone Acetate35suppressed
Nifedipine ErNifedipine31suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid30suppressed
ValsartanValsartan27suppressed
Cartia XtDiltiazem Hcl2418
DapagliflozinDapagliflozin Propanediol2414
Pantoprazole SodiumPantoprazole Sodium24suppressed
Verapamil ErVerapamil Hcl24suppressed
FenofibrateFenofibrate23suppressed
OzempicSemaglutide23suppressed
DroxidopaDroxidopa21suppressed
Klor-Con M10Potassium Chloride21suppressed
Sildenafil CitrateSildenafil Citrate21suppressed
CelecoxibCelecoxib20suppressed
Enalapril MaleateEnalapril Maleate20suppressed
Albuterol Sulfate HfaAlbuterol Sulfate19suppressed
Olmesartan MedoxomilOlmesartan Medoxomil19suppressed
AmoxicillinAmoxicillin1814
CilostazolCilostazol18suppressed
VyndaqelTafamidis Meglumine18suppressed
Metformin HclMetformin Hcl16suppressed
OmeprazoleOmeprazole16suppressed
Doxazosin MesylateDoxazosin Mesylate14suppressed
Diltiazem 24hr ErDiltiazem Hcl13suppressed
EplerenoneEplerenone13suppressed
Westab PlusPnv,calcium 72/Iron/Folic Acid13suppressed
BosentanBosentan12suppressed
Doxycycline HyclateDoxycycline Hyclate1211
Nebivolol HclNebivolol Hcl12suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters12suppressed
OpsumitMacitentan12suppressed
Propafenone Hcl ErPropafenone Hcl12suppressed
Isosorbide DinitrateIsosorbide Dinitrate11suppressed
Propranolol HclPropranolol 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 $233.85 · 12 records ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) ELIQUIS, FARXIGA, Kerendia, LEQVIO, LUX-Dx Insertable Cardiac Monitor, LifeVest, WATCHMAN Access System 6
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