Healthcare provider profile · identity verified

Matthew Timothy Clark, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · SHENANDOAH, TX · NPI 1497072227

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 Matthew Timothy Clark, M.D. received $2,630.40 in general payments during 2025 across 119 reported records.

ABBVIE INC. accounted for 28.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 26 associated products.

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

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 42 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 73 claims for Linzess by this doctor in 2024.

Aimmune Therapeutics, 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 ZENPEP as an associated drug or biological on 32144 records involving 12432 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Zenpep by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PLENVU as an associated drug or biological on 1016 records involving 359 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Plenvu by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,630.40

119 reported records · 23 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
ABBVIE INC. Unresolved — no canonical attribution shown $754.9628.7%462025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $264.0010.0%82025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $258.899.8%122025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $186.257.1%52025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$163.886.2%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $150.555.7%72025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $119.894.6%52025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $79.943.0%42025
GENZYME CORPORATION Unresolved — no canonical attribution shown $77.663.0%32025
NeurAxis, Inc. Unresolved — no canonical attribution shown $77.473.0%12025
QOL Medical, LLC Unresolved — no canonical attribution shown $72.192.7%32025
Braintree Laboratories, Inc. Unresolved — no canonical attribution shown $56.342.1%32025
Celltrion USA Inc. Unresolved — no canonical attribution shown $54.572.1%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $52.602.0%32025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $49.321.9%22025
Ardelyx, Inc. Unresolved — no canonical attribution shown $44.601.7%32025
Intercept Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $41.591.6%32025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $30.411.2%12025
Aimmune Therapeutics, Inc. Unresolved — no canonical attribution shown $29.941.1%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $19.730.8%12025
Biocon Biologics Inc Unresolved — no canonical attribution shown $16.210.6%12025
PFIZER INC. Unresolved — no canonical attribution shown $15.660.6%12025
VIVUS LLC Unresolved — no canonical attribution shown $13.750.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,630.40119

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
LINZESS
Normalized: linzess
Drug ABBVIE INC. $422.48 20 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $370.20 17 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $315.12 25 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $314.63 24 2025
Source payment records
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $264.00 8 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $263.91 8 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $258.89 12 2025
Source payment records
PILLCAM
Normalized: pillcam
Device Medtronic, Inc. $163.88 1 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $150.55 7 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $119.89 5 2025
Source payment records
Sucraid
Normalized: sucraid
Drug QOL Medical, LLC $72.19 3 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $62.79 3 2025
Source payment records
  • 2025-05-05 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.66 · Open Payments source
  • 2025-06-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.10 · Open Payments source
  • 2025-12-09 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.03 · Open Payments source
SUFLAVE
Normalized: suflave
Drug Braintree Laboratories, Inc. $56.34 3 2025
Source payment records
SUTAB
Normalized: sutab
Drug Braintree Laboratories, Inc. $56.34 3 2025
Source payment records
VEGZELMA
Normalized: vegzelma
Biological Celltrion USA Inc. $54.57 3 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $52.60 3 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $44.60 3 2025
Source payment records
OCALIVA
Normalized: ocaliva
Drug Intercept Pharmaceuticals, Inc. $41.59 3 2025
Source payment records
IQIRVO
Normalized: iqirvo
Drug Ipsen Biopharmaceuticals, Inc $30.41 1 2025
Source payment records
VOWST
Normalized: vowst
Biological Aimmune Therapeutics, Inc. $29.94 2 2025
Source payment records
OMVOH
Normalized: omvoh
Drug Lilly USA, LLC $19.73 1 2025
Source payment records
MAVYRET
Normalized: mavyret
Drug ABBVIE INC. $17.36 1 2025
Source payment records
TRULANCE
Normalized: trulance
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $17.15 1 2025
Source payment records
  • 2025-01-30 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.15 · Open Payments source
Yesintek
Normalized: yesintek
Biological Biocon Biologics Inc $16.21 1 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $15.66 1 2025
Source payment records
PANCREAZE
Normalized: pancreaze
Drug VIVUS LLC $13.75 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 42 exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 73 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
42 13
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
73 22
Aimmune Therapeutics, Inc.
Exact reporting entity; no affiliate inference
2025 ZENPEP
open payments reported associated product
CMS Open Payments — General Payments
32144 supporting records · 12432 recipient NPIs · example record 1249641927
Zenpep · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 PLENVU
open payments reported associated product
CMS Open Payments — General Payments
1016 supporting records · 359 recipient NPIs · example record 1231776646
Plenvu · 2024
Exact normalized brand match · 1 Part D row
18 18

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
Pantoprazole SodiumPantoprazole Sodium392157
FamotidineFamotidine11551
CholestyramineCholestyramine (With Sugar)10954
SucralfateSucralfate10751
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates103101
ClenpiqSod Picosulf/Mag Ox/Citric Ac9794
Dicyclomine HclDicyclomine Hcl9555
LinzessLinaclotide7322
OmeprazoleOmeprazole5525
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4336
CreonLipase/Protease/Amylase4213
Ondansetron OdtOndansetron3215
Budesonide DrBudesonide28suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium2713
MesalamineMesalamine27suppressed
Ondansetron HclOndansetron Hcl2716
Promethazine HclPromethazine Hcl27suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine2413
Dexlansoprazole DrDexlansoprazole23suppressed
MovantikNaloxegol Oxalate23suppressed
Colestipol HclColestipol Hcl22suppressed
Mesalamine ErMesalamine22suppressed
PlenvuPeg3350/Sod Sul/Nacl/Kcl/Asb/C1818
LubiprostoneLubiprostone16suppressed
FluconazoleFluconazole15suppressed
Ciprofloxacin HclCiprofloxacin Hcl1412
Colesevelam HclColesevelam Hcl14suppressed
SpironolactoneSpironolactone12suppressed
Cholestyramine LightCholestyramine11suppressed
ZenpepLipase/Protease/Amylase11suppressed

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 $2,630.40 · 119 records ABBVIE INC. CREON, DUPIXENT, ENTYVIO, IBSRELA, IQIRVO, LINZESS, MAVYRET, OCALIVA, OMVOH, PANCREAZE, PILLCAM, REZDIFFRA, RINVOQ, SKYRIZI, SUFLAVE, SUTAB, Sucraid, TREMFYA, TRULANCE, VEGZELMA, VELSIPITY, VOQUEZNA, VOWST, Wegovy, XIFAXAN, Yesintek 4
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