Healthcare provider profile · identity verified

Reda H Ishak, M.D.

Internal Medicine · WEST SPRINGFIELD, MA · NPI 1366428013

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 Calcium576143
Levothyroxine SodiumLevothyroxine Sodium32166
LisinoprilLisinopril29668
Metoprolol SuccinateMetoprolol Succinate27271
OmeprazoleOmeprazole25454
Metformin HclMetformin Hcl24965
GabapentinGabapentin22047
Amlodipine BesylateAmlodipine Besylate20250
SimvastatinSimvastatin19937
HydrochlorothiazideHydrochlorothiazide17547
Tamsulosin HclTamsulosin Hcl14937
FurosemideFurosemide14333
Fluticasone PropionateFluticasone Propionate11437
Potassium ChloridePotassium Chloride10324
Donepezil HclDonepezil Hcl10219
OzempicSemaglutide10216
Albuterol Sulfate HfaAlbuterol Sulfate10127
Lantus SolostarInsulin Glargine,hum.Rec.Anlog10124
EliquisApixaban9521
Pantoprazole SodiumPantoprazole Sodium8823
FenofibrateFenofibrate8717
AllopurinolAllopurinol8121
Sertraline HclSertraline Hcl7718
Zolpidem TartrateZolpidem Tartrate7017
Losartan PotassiumLosartan Potassium6618
Pioglitazone HclPioglitazone Hcl6617
Isosorbide Mononitrate ErIsosorbide Mononitrate6318
JardianceEmpagliflozin6318
Clonidine HclClonidine Hcl6013
IrbesartanIrbesartan5917
Warfarin SodiumWarfarin Sodium5911
Rosuvastatin CalciumRosuvastatin Calcium5818
Metoprolol TartrateMetoprolol Tartrate5616
Metformin Hcl ErMetformin Hcl5412
Montelukast SodiumMontelukast Sodium5411
CarvedilolCarvedilol5312
Tramadol HclTramadol Hcl5312
TrulicityDulaglutide50suppressed
MirtazapineMirtazapine4912
Pravastatin SodiumPravastatin Sodium4911
Paroxetine HclParoxetine Hcl4711
ClopidogrelClopidogrel Bisulfate4412
FinasterideFinasteride4211
Vitamin D2Ergocalciferol (Vitamin D2)4112
Duloxetine HclDuloxetine Hcl40suppressed
LinzessLinaclotide3911
Oxybutynin Chloride ErOxybutynin Chloride37suppressed
SpironolactoneSpironolactone3711
AtenololAtenolol35suppressed
LorazepamLorazepam3518
ValsartanValsartan35suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide34suppressed
Amitriptyline HclAmitriptyline Hcl33suppressed
BaclofenBaclofen3118
Diltiazem 24hr Er (Cd)Diltiazem Hcl3111
Spiriva RespimatTiotropium Bromide30suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog29suppressed
FenofibrateFenofibrate Nanocrystallized29suppressed
FenofibrateFenofibrate,micronized29suppressed
GlipizideGlipizide29suppressed
Metoclopramide HclMetoclopramide Hcl29suppressed
Fluoxetine HclFluoxetine Hcl28suppressed
GlimepirideGlimepiride28suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic2814
Bupropion Hcl SrBupropion Hcl27suppressed
Glipizide ErGlipizide27suppressed
Ropinirole HclRopinirole Hcl27suppressed
Ventolin HfaAlbuterol Sulfate25suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone24suppressed
FebuxostatFebuxostat24suppressed
Hydralazine HclHydralazine Hcl24suppressed
LoperamideLoperamide Hcl24suppressed
Trazodone HclTrazodone Hcl24suppressed
Alendronate SodiumAlendronate Sodium23suppressed
Nifedipine ErNifedipine23suppressed
TorsemideTorsemide23suppressed
Verapamil ErVerapamil Hcl23suppressed
AzithromycinAzithromycin2220
ClonazepamClonazepam22suppressed
Doxycycline HyclateDoxycycline Hyclate22suppressed
Incruse ElliptaUmeclidinium Bromide22suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide22suppressed
Meclizine HclMeclizine Hcl22suppressed
MyrbetriqMirabegron22suppressed
PregabalinPregabalin21suppressed
Chlorhexidine GluconateChlorhexidine Gluconate20suppressed
SynthroidLevothyroxine Sodium19suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide19suppressed
LantusInsulin Glargine,hum.Rec.Anlog18suppressed
LevofloxacinLevofloxacin1815
Enalapril MaleateEnalapril Maleate17suppressed
EzetimibeEzetimibe17suppressed
LovastatinLovastatin17suppressed
BuprenorphineBuprenorphine16suppressed
Niacin ErNiacin16suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic16suppressed
Wixela InhubFluticasone Propion/Salmeterol16suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen15suppressed
Ondansetron HclOndansetron Hcl14suppressed
Alcohol Prep PadsAlcohol Antiseptic Pads13suppressed
AmantadineAmantadine Hcl13suppressed
Folic AcidFolic Acid13suppressed
Propranolol HclPropranolol Hcl13suppressed
DigoxinDigoxin12suppressed
Dilt-XrDiltiazem Hcl12suppressed
Diltiazem 12hr ErDiltiazem Hcl12suppressed
MeloxicamMeloxicam12suppressed
PrimidonePrimidone12suppressed
Breo ElliptaFluticasone/Vilanterol11suppressed
Ciprofloxacin HclCiprofloxacin Hcl11suppressed
Hydroxyzine HclHydroxyzine Hcl11suppressed
MetronidazoleMetronidazole11suppressed
Propranolol Hcl ErPropranolol Hcl11suppressed
Spiriva HandihalerTiotropium Bromide11suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter11suppressed

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