Healthcare provider profile · identity verified

Rex Keith Kessler, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · ASTON, PA · NPI 1841298023

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 Rex Keith Kessler, M.D. received $19.99 in general payments during 2025 across 1 reported records.

Abbott Laboratories accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$19.99

1 reported records · 1 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
Abbott Laboratories Unresolved — no canonical attribution shown $19.99100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$19.991

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
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $19.99 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

None of this doctor’s payer companies has same-entity product evidence that passes the publication threshold. The site does not infer company ownership, affiliates, or generic manufacturers.

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
Metformin Hcl ErMetformin Hcl19446
Levothyroxine SodiumLevothyroxine Sodium15244
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11848
Lantus SolostarInsulin Glargine,hum.Rec.Anlog11526
RepaglinideRepaglinide11232
Metformin HclMetformin Hcl11134
TrulicityDulaglutide10623
JardianceEmpagliflozin10529
OzempicSemaglutide9021
AcarboseAcarbose8525
Humulin R U-500 KwikpenInsulin Regular, Human8213
Tresiba Flextouch U-200Insulin Degludec8216
Tresiba Flextouch U-100Insulin Degludec8022
Humalog Kwikpen U-100Insulin Lispro5313
Rosuvastatin CalciumRosuvastatin Calcium5316
SynthroidLevothyroxine Sodium4813
FarxigaDapagliflozin Propanediol43suppressed
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp41suppressed
MethimazoleMethimazole34suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)3012
GlyxambiEmpagliflozin/Linagliptin28suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog27suppressed
JanuviaSitagliptin Phosphate26suppressed
Novolog FlexpenInsulin Aspart2612
SpironolactoneSpironolactone26suppressed
Atorvastatin CalciumAtorvastatin Calcium25suppressed
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro24suppressed
InvokanaCanagliflozin22suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic20suppressed
Insulin Lispro Protamine MixInsulin Lispro Protamin/Lispro19suppressed
MounjaroTirzepatide18suppressed
TestosteroneTestosterone18suppressed
Armour ThyroidThyroid,pork17suppressed
Bromocriptine MesylateBromocriptine Mesylate16suppressed
Liothyronine SodiumLiothyronine Sodium16suppressed
Metoprolol SuccinateMetoprolol Succinate16suppressed
Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm16suppressed
Pioglitazone HclPioglitazone Hcl16suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic16suppressed
CholestyramineCholestyramine (With Sugar)15suppressed
Novolog Mix 70-30Insulin Aspart Prot/Insuln Asp15suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog15suppressed
HydrochlorothiazideHydrochlorothiazide14suppressed
Losartan PotassiumLosartan Potassium13suppressed
RybelsusSemaglutide13suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic12suppressed
Colesevelam HclColesevelam Hcl11suppressed
EzetimibeEzetimibe11suppressed
Lyumjev Kwikpen U-100Insulin Lispro-Aabc11suppressed
NateglinideNateglinide11suppressed
PrednisonePrednisone11suppressed

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 $19.99 · 1 records Abbott Laboratories FREESTYLE LIBRE 3
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