Healthcare provider profile · identity verified

Samuel Grainger Mcdowell, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · REIDSVILLE, NC · NPI 1457315335

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 Samuel Grainger Mcdowell, M.D. received $572.39 in general payments during 2025 across 29 reported records.

Merck Sharp & Dohme LLC accounted for 15.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 11 associated products.

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

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 31 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 137 claims for Farxiga 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 189 claims for Jardiance 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 420 claims for Entresto by this doctor in 2024.

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

Payment overview · 2025

General Payments

$572.39

29 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
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $87.0715.2%52025
Novo Nordisk Inc Unresolved — no canonical attribution shown $84.8714.8%42025
Amgen Inc. Unresolved — no canonical attribution shown $83.3714.6%52025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $69.9512.2%42025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $67.1611.7%42025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $53.389.3%32025
Boston Scientific Corporation Unresolved — no canonical attribution shown $53.149.3%12025
Abbott Laboratories Unresolved — no canonical attribution shown $30.905.4%12025
SCPHARMACEUTICALS INC. Unresolved — no canonical attribution shown $21.813.8%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.743.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$572.3929

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
VERQUVO
Normalized: verquvo
Drug Merck Sharp & Dohme LLC $87.07 5 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $83.37 5 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $69.95 4 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $67.16 4 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $53.38 3 2025
Source payment records
WATCHMAN
Normalized: watchman
Device Boston Scientific Corporation $53.14 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $42.28 2 2025
Source payment records
THORATEC HEARTMATE 3 LVAS IMPLANT KIT
Normalized: thoratec heartmate 3 lvas implant kit
Device Abbott Laboratories $30.90 1 2025
Source payment records
FUROSCIX
Normalized: furoscix
Drug SCPHARMACEUTICALS INC. $21.81 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $21.16 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $20.74 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 137 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 189 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
31 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
137 22
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
189 31
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
420 65

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
EliquisApixaban918176
Metoprolol SuccinateMetoprolol Succinate703197
Atorvastatin CalciumAtorvastatin Calcium582144
Rosuvastatin CalciumRosuvastatin Calcium542148
Isosorbide Mononitrate ErIsosorbide Mononitrate452116
Metoprolol TartrateMetoprolol Tartrate434128
Amlodipine BesylateAmlodipine Besylate432111
EntrestoSacubitril/Valsartan42065
CarvedilolCarvedilol40493
Losartan PotassiumLosartan Potassium384101
FurosemideFurosemide341122
Potassium ChloridePotassium Chloride30980
SpironolactoneSpironolactone27478
ClopidogrelClopidogrel Bisulfate26163
Warfarin SodiumWarfarin Sodium23354
NitroglycerinNitroglycerin212122
XareltoRivaroxaban20533
JardianceEmpagliflozin18931
Diltiazem 24hr Er (Cd)Diltiazem Hcl18243
Amiodarone HclAmiodarone Hcl16745
TorsemideTorsemide15340
EzetimibeEzetimibe14446
FarxigaDapagliflozin Propanediol13722
Repatha SureclickEvolocumab13225
LisinoprilLisinopril11332
Pravastatin SodiumPravastatin Sodium10923
Hydralazine HclHydralazine Hcl9529
SimvastatinSimvastatin9521
Bisoprolol FumarateBisoprolol Fumarate8624
Flecainide AcetateFlecainide Acetate6613
HydrochlorothiazideHydrochlorothiazide6617
Midodrine HclMidodrine Hcl5717
DigoxinDigoxin5012
ChlorthalidoneChlorthalidone4015
Pantoprazole SodiumPantoprazole Sodium4015
AtenololAtenolol3612
Benazepril HclBenazepril Hcl34suppressed
Ranolazine ErRanolazine34suppressed
BrilintaTicagrelor31suppressed
Klor-Con M20Potassium Chloride3111
Diltiazem HclDiltiazem Hcl28suppressed
RamiprilRamipril27suppressed
Enalapril MaleateEnalapril Maleate23suppressed
Verapamil ErVerapamil Hcl20suppressed
Cartia XtDiltiazem Hcl16suppressed
JantovenWarfarin Sodium16suppressed
DofetilideDofetilide15suppressed
OmeprazoleOmeprazole15suppressed
Diltiazem 24hr ErDiltiazem Hcl14suppressed
Nifedipine ErNifedipine13suppressed
Acebutolol HclAcebutolol Hcl12suppressed
EplerenoneEplerenone12suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12suppressed
MetolazoneMetolazone12suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin11suppressed
Oxycodone HclOxycodone Hcl11suppressed
Praluent PenAlirocumab11suppressed
Zolpidem TartrateZolpidem Tartrate11suppressed

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 $572.39 · 29 records Merck Sharp & Dohme LLC FARXIGA, FUROSCIX, JARDIANCE, Kerendia, LEQVIO, Ozempic, REPATHA, THORATEC HEARTMATE 3 LVAS IMPLANT KIT, VERQUVO, WATCHMAN, Wegovy 4
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