Healthcare provider profile · identity verified

David R. Pfaff, M.D.

Internal Medicine · STATEN ISLAND, NY · NPI 1639276447

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 Calcium15744
Atorvastatin CalciumAtorvastatin Calcium14038
Amlodipine BesylateAmlodipine Besylate11731
FamotidineFamotidine8926
EzetimibeEzetimibe8224
MounjaroTirzepatide7711
Metoprolol SuccinateMetoprolol Succinate7622
Losartan PotassiumLosartan Potassium7521
Pravastatin SodiumPravastatin Sodium7118
ValsartanValsartan6318
Metformin HclMetformin Hcl5017
Levothyroxine SodiumLevothyroxine Sodium39suppressed
Escitalopram OxalateEscitalopram Oxalate3812
LisinoprilLisinopril37suppressed
Duloxetine HclDuloxetine Hcl34suppressed
HydrochlorothiazideHydrochlorothiazide34suppressed
Montelukast SodiumMontelukast Sodium3116
EliquisApixaban30suppressed
SynthroidLevothyroxine Sodium28suppressed
Tamsulosin HclTamsulosin Hcl27suppressed
ClopidogrelClopidogrel Bisulfate26suppressed
Pioglitazone HclPioglitazone Hcl26suppressed
SimvastatinSimvastatin26suppressed
JardianceEmpagliflozin25suppressed
Metformin Hcl ErMetformin Hcl25suppressed
Metoprolol TartrateMetoprolol Tartrate21suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip20suppressed
PregabalinPregabalin19suppressed
Sertraline HclSertraline Hcl18suppressed
Candesartan CilexetilCandesartan Cilexetil17suppressed
GabapentinGabapentin17suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide17suppressed
ColchicineColchicine16suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol16suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride16suppressed
AzithromycinAzithromycin1513
FurosemideFurosemide15suppressed
AllopurinolAllopurinol14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa14suppressed
CelecoxibCelecoxib14suppressed
PlavixClopidogrel Bisulfate13suppressed
Advair HfaFluticasone Propion/Salmeterol12suppressed
CarvedilolCarvedilol12suppressed
LipitorAtorvastatin Calcium12suppressed
Fluticasone PropionateFluticasone Propionate11suppressed
OzempicSemaglutide11suppressed
Trandolapril-Verapamil ErTrandolapril/Verapamil Hcl11suppressed
Venlafaxine Hcl ErVenlafaxine 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