Healthcare provider profile · identity verified

David S Garson, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · WILLIAMSVILLE, NY · NPI 1457337388

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 David S Garson, M.D. received $1,370.36 in general payments during 2025 across 71 reported records.

ABBVIE INC. accounted for 35.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 17 associated products.

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

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 28 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 48 claims for Linzess by this doctor in 2024.

Janssen Biotech, 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 STELARA as an associated drug or biological on 23706 records involving 7279 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Stelara by this doctor in 2024.

PFIZER 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 XELJANZ as an associated drug or biological on 32588 records involving 8614 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Xeljanz 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 XIFAXAN as an associated drug or biological on 101901 records involving 33018 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Xifaxan by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,370.36

71 reported records · 14 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 $490.6035.8%282025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $265.3219.4%182025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $150.3711.0%22025
PFIZER INC. Unresolved — no canonical attribution shown $112.708.2%62025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $65.314.8%32025
Ardelyx, Inc. Unresolved — no canonical attribution shown $53.913.9%22025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $50.793.7%22025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $42.493.1%32025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $35.832.6%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $28.872.1%22025
QOL Medical, LLC Unresolved — no canonical attribution shown $27.062.0%12025
Aimmune Therapeutics, Inc. Unresolved — no canonical attribution shown $18.631.4%12025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $18.001.3%12025
Janssen Pharmaceuticals, Inc Unresolved — no canonical attribution shown $10.480.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,359.8870
Education$10.481

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
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $265.32 18 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $246.14 18 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $246.14 18 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $244.46 10 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $178.57 8 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $150.37 2 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $112.70 6 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $53.91 2 2025
Source payment records
XELJANZ
Normalized: xeljanz
Drug PFIZER INC. $51.55 3 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $50.79 2 2025
Source payment records
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $47.09 2 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological Regeneron Healthcare Solutions, Inc. $35.83 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $28.87 2 2025
Source payment records
  • 2025-02-28 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.67 · Open Payments source
  • 2025-05-12 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.20 · Open Payments source
Sucraid
Normalized: sucraid
Drug QOL Medical, LLC $27.06 1 2025
Source payment records
VOWST
Normalized: vowst
Biological Aimmune Therapeutics, Inc. $18.63 1 2025
Source payment records
EOHILIA
Normalized: eohilia
Drug Takeda Pharmaceuticals U.S.A., Inc. $18.22 1 2025
Source payment records
IQIRVO
Normalized: iqirvo
Drug Ipsen Biopharmaceuticals, Inc $18.00 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 28
Beneficiary count suppressed
exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 48 exact normalized Medicare Part D
XELJANZ
xeljanz
2025 Xeljanz 2024 12
Beneficiary count suppressed
exact normalized Medicare Part D
XIFAXAN
xifaxan
2025 Xifaxan 2024 22 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
28 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
48 12
Janssen Biotech, Inc.
Exact reporting entity; no affiliate inference
2025 STELARA
open payments reported associated product
CMS Open Payments — General Payments
23706 supporting records · 7279 recipient NPIs · example record 1174257377
Stelara · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 XELJANZ
open payments reported associated product
CMS Open Payments — General Payments
32588 supporting records · 8614 recipient NPIs · example record 1228794176
Xeljanz · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 XIFAXAN
open payments reported associated product
CMS Open Payments — General Payments
101901 supporting records · 33018 recipient NPIs · example record 1231775337
Xifaxan · 2024
Exact normalized brand match · 1 Part D row
22 12

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
OmeprazoleOmeprazole764221
Pantoprazole SodiumPantoprazole Sodium644206
FamotidineFamotidine468161
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates272272
Ondansetron HclOndansetron Hcl247214
Dicyclomine HclDicyclomine Hcl18655
LansoprazoleLansoprazole8925
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine7926
Prochlorperazine MaleateProchlorperazine Maleate7875
Esomeprazole MagnesiumEsomeprazole Magnesium7525
SucralfateSucralfate7418
Colestipol HclColestipol Hcl7322
LactuloseLactulose5917
Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg5858
MesalamineMesalamine5311
PrednisonePrednisone5012
Balsalazide DisodiumBalsalazide Disodium48suppressed
LinzessLinaclotide4812
SulfasalazineSulfasalazine46suppressed
Metoclopramide HclMetoclopramide Hcl4421
NexiumEsomeprazole Magnesium41suppressed
DexilantDexlansoprazole40suppressed
UrsodiolUrsodiol40suppressed
Budesonide EcBudesonide3811
AzathioprineAzathioprine3711
Rabeprazole SodiumRabeprazole Sodium37suppressed
CholestyramineCholestyramine (With Sugar)3314
LoperamideLoperamide Hcl32suppressed
MetronidazoleMetronidazole3225
CreonLipase/Protease/Amylase28suppressed
LubiprostoneLubiprostone27suppressed
Mesalamine DrMesalamine27suppressed
MercaptopurineMercaptopurine25suppressed
Alosetron HclAlosetron Hcl22suppressed
Mesalamine ErMesalamine22suppressed
Ondansetron OdtOndansetron2212
XifaxanRifaximin2212
Humira PenAdalimumab21suppressed
MisoprostolMisoprostol21suppressed
Amitriptyline HclAmitriptyline Hcl20suppressed
Sulfasalazine DrSulfasalazine20suppressed
BaclofenBaclofen19suppressed
Procto-Med HcHydrocortisone19suppressed
Humira(Cf) PenAdalimumab18suppressed
StelaraUstekinumab18suppressed
Budesonide DrBudesonide17suppressed
CimetidineCimetidine17suppressed
HydrocortisoneHydrocortisone17suppressed
ConstuloseLactulose16suppressed
FurosemideFurosemide15suppressed
SutabSod Sulf/Pot Chloride/Mag Sulf1515
ClenpiqSod Picosulf/Mag Ox/Citric Ac1414
Dexlansoprazole DrDexlansoprazole14suppressed
EnuloseLactulose14suppressed
FluconazoleFluconazole14suppressed
ClotrimazoleClotrimazole13suppressed
Desipramine HclDesipramine Hcl12suppressed
EntecavirEntecavir12suppressed
Tenofovir Disoproxil FumarateTenofovir Disoproxil Fumarate12suppressed
XeljanzTofacitinib Citrate12suppressed
Lidocaine Hcl ViscousLidocaine Hcl11suppressed
PentasaMesalamine11suppressed

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 $1,370.36 · 71 records ABBVIE INC. CREON, DUPIXENT, ENTYVIO, EOHILIA, IBSRELA, IQIRVO, LINZESS, REZDIFFRA, RINVOQ, SKYRIZI, Sucraid, TREMFYA, VELSIPITY, VOQUEZNA, VOWST, XELJANZ, XIFAXAN 5
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