Healthcare provider profile · identity verified

William R Kessler, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · INDIANAPOLIS, IN · NPI 1114976685

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 William R Kessler, MD received $544.59 in general payments during 2025 across 24 reported records.

Takeda Pharmaceuticals U.S.A., Inc. accounted for 23.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 16 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Creon, Linzess, Sutab.

ABBVIE 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 CREON as an associated drug or biological on 91561 records involving 20616 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Creon by this doctor in 2024.

ABBVIE 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Linzess by this doctor in 2024.

Braintree Laboratories, 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 SUTAB as an associated drug or biological on 3132 records involving 2335 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Sutab by this doctor in 2024.

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

Payment overview · 2025

General Payments

$544.59

24 reported records · 13 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
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $127.1223.3%52025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $92.3517.0%42025
ABBVIE INC. Unresolved — no canonical attribution shown $55.3510.2%32025
Eisai Inc. Unresolved — no canonical attribution shown $51.239.4%22025
Ardelyx, Inc. Unresolved — no canonical attribution shown $42.777.8%22025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $29.685.5%12025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $28.535.2%12025
ARGENX US, INC. Unresolved — no canonical attribution shown $26.454.9%12025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $23.414.3%12025
Cycle Pharmaceuticals Inc Unresolved — no canonical attribution shown $20.973.9%12025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $17.603.2%12025
Braintree Laboratories, Inc. Unresolved — no canonical attribution shown $15.202.8%12025
Echosens North America, Inc. Unresolved — no canonical attribution shown $13.932.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$544.5924

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
EOHILIA
Normalized: eohilia
Drug Takeda Pharmaceuticals U.S.A., Inc. $105.54 4 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $92.35 4 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $51.23 2 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $42.77 2 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $37.46 2 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $36.30 2 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $29.68 1 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological Regeneron Healthcare Solutions, Inc. $28.53 1 2025
Source payment records
VYVGART
Normalized: vyvgart
Drug ARGENX US, INC. $26.45 1 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $23.41 1 2025
Source payment records
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $21.58 1 2025
Source payment records
Tascenso ODT
Normalized: tascenso odt
Drug Cycle Pharmaceuticals Inc $20.97 1 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug Sumitomo Pharma America, Inc. $17.60 1 2025
Source payment records
SUFLAVE
Normalized: suflave
Drug Braintree Laboratories, Inc. $15.20 1 2025
Source payment records
SUTAB
Normalized: sutab
Drug Braintree Laboratories, Inc. $15.20 1 2025
Source payment records
Fibroscan
Normalized: fibroscan
Device Echosens North America, Inc. $13.93 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
CREON
creon
2025 Creon 2024 14
Beneficiary count suppressed
exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 13
Beneficiary count suppressed
exact normalized Medicare Part D
SUTAB
sutab
2025 Sutab 2024 21 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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 CREON
open payments reported associated product
CMS Open Payments — General Payments
91561 supporting records · 20616 recipient NPIs · example record 1201352608
Creon · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
Braintree Laboratories, Inc.
Exact reporting entity; no affiliate inference
2025 SUTAB
open payments reported associated product
CMS Open Payments — General Payments
3132 supporting records · 2335 recipient NPIs · example record 1173775820
Sutab · 2024
Exact normalized brand match · 1 Part D row
21 21

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
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl167164
Pantoprazole SodiumPantoprazole Sodium10034
OmeprazoleOmeprazole7528
Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl6159
Colestipol HclColestipol Hcl5418
Dexlansoprazole DrDexlansoprazole36suppressed
Budesonide DrBudesonide22suppressed
FamotidineFamotidine21suppressed
SutabSod Sulf/Pot Chloride/Mag Sulf2121
LubiprostoneLubiprostone20suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium17suppressed
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates1717
Dicyclomine HclDicyclomine Hcl16suppressed
CreonLipase/Protease/Amylase14suppressed
Lidocaine Hcl ViscousLidocaine Hcl1411
UrsodiolUrsodiol14suppressed
LinzessLinaclotide13suppressed

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 $544.59 · 24 records Takeda Pharmaceuticals U.S.A., Inc. CREON, DUPIXENT, ENTYVIO, EOHILIA, Fibroscan, IBSRELA, LINZESS, Lenvima, ORGOVYX, REZDIFFRA, SUFLAVE, SUTAB, TREMFYA, Tascenso ODT, VOQUEZNA, VYVGART 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