Healthcare provider profile · identity verified

Jason Primer, M.D.

Internal Medicine · CHICAGO, IL · NPI 1487693628

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 Calcium639184
Amlodipine BesylateAmlodipine Besylate409114
Atorvastatin CalciumAtorvastatin Calcium35098
Levothyroxine SodiumLevothyroxine Sodium29874
Metoprolol SuccinateMetoprolol Succinate25772
Losartan PotassiumLosartan Potassium19957
OmeprazoleOmeprazole15052
EzetimibeEzetimibe13947
Pravastatin SodiumPravastatin Sodium13839
Olmesartan MedoxomilOlmesartan Medoxomil12136
LisinoprilLisinopril11931
Sertraline HclSertraline Hcl10529
EliquisApixaban10422
Pantoprazole SodiumPantoprazole Sodium9432
HydrochlorothiazideHydrochlorothiazide9230
Tamsulosin HclTamsulosin Hcl9126
FurosemideFurosemide7919
GabapentinGabapentin7521
MounjaroTirzepatide7512
Metformin HclMetformin Hcl6822
Trazodone HclTrazodone Hcl6622
JanuviaSitagliptin Phosphate6017
Zolpidem TartrateZolpidem Tartrate6017
AllopurinolAllopurinol5919
AlprazolamAlprazolam5223
Escitalopram OxalateEscitalopram Oxalate5213
Potassium ChloridePotassium Chloride5216
CarvedilolCarvedilol5113
Metformin Hcl ErMetformin Hcl5119
JardianceEmpagliflozin5014
ClonazepamClonazepam48suppressed
Tramadol HclTramadol Hcl4514
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4112
IrbesartanIrbesartan4012
SpironolactoneSpironolactone4011
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide38suppressed
OzempicSemaglutide37suppressed
ClopidogrelClopidogrel Bisulfate35suppressed
Metoprolol TartrateMetoprolol Tartrate3411
Esomeprazole MagnesiumEsomeprazole Magnesium33suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3311
Bupropion XlBupropion Hcl32suppressed
Citalopram HbrCitalopram Hydrobromide32suppressed
Fluticasone PropionateFluticasone Propionate3114
AtenololAtenolol30suppressed
Azelastine HclAzelastine Hcl3018
FamotidineFamotidine29suppressed
FinasterideFinasteride29suppressed
Pioglitazone HclPioglitazone Hcl29suppressed
TradjentaLinagliptin28suppressed
FarxigaDapagliflozin Propanediol26suppressed
MeloxicamMeloxicam25suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide25suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2313
Hydralazine HclHydralazine Hcl22suppressed
Nifedipine ErNifedipine22suppressed
SimvastatinSimvastatin22suppressed
Warfarin SodiumWarfarin Sodium22suppressed
Duloxetine HclDuloxetine Hcl20suppressed
LorazepamLorazepam20suppressed
Ventolin HfaAlbuterol Sulfate20suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog19suppressed
LansoprazoleLansoprazole19suppressed
MethylprednisoloneMethylprednisolone1915
Montelukast SodiumMontelukast Sodium19suppressed
Nebivolol HclNebivolol Hcl19suppressed
GlimepirideGlimepiride18suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst18suppressed
Paroxetine HclParoxetine Hcl18suppressed
Repatha SureclickEvolocumab18suppressed
XareltoRivaroxaban18suppressed
SynthroidLevothyroxine Sodium17suppressed
ValsartanValsartan17suppressed
Verapamil ErVerapamil Hcl17suppressed
MyrbetriqMirabegron16suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic15suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate14suppressed
ValacyclovirValacyclovir Hcl14suppressed
ChlorthalidoneChlorthalidone13suppressed
MirtazapineMirtazapine13suppressed
Donepezil HclDonepezil Hcl12suppressed
FenofibrateFenofibrate Nanocrystallized12suppressed
HydrocortisoneHydrocortisone12suppressed
KetoconazoleKetoconazole12suppressed
Potassium Citrate ErPotassium Citrate12suppressed
Verapamil SrVerapamil Hcl12suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl11suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol11suppressed
GlipizideGlipizide11suppressed
Glipizide ErGlipizide11suppressed
Ipratropium BromideIpratropium Bromide11suppressed
PrednisonePrednisone11suppressed
Triamcinolone AcetonideTriamcinolone Acetonide11suppressed

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