Healthcare provider profile · identity verified

Igor Grosman, D.O.

Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · BROOKLYN, NY · NPI 1851506869

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 Igor Grosman, D.O. received $390.37 in general payments during 2025 across 17 reported records.

Takeda Pharmaceuticals U.S.A., Inc. accounted for 33.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 12 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Voquezna, 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 202 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 128 claims for Linzess by this doctor in 2024.

Phathom Pharmaceuticals, 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 VOQUEZNA as an associated drug or biological on 90302 records involving 33442 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Voquezna 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 TRULANCE as an associated drug or biological on 2652 records involving 1501 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Trulance 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 45 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

$390.37

17 reported records · 10 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 $130.2533.4%52025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $59.5915.3%22025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $42.4910.9%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $37.899.7%22025
Celltrion USA Inc. Unresolved — no canonical attribution shown $25.366.5%12025
Ardelyx, Inc. Unresolved — no canonical attribution shown $25.006.4%12025
PFIZER INC. Unresolved — no canonical attribution shown $23.866.1%12025
ABBVIE INC. Unresolved — no canonical attribution shown $23.085.9%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $20.185.2%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $2.670.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$390.3717

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
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $130.25 5 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $59.59 2 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $42.49 2 2025
Source payment records
OMVOH
Normalized: omvoh
Drug Lilly USA, LLC $37.89 2 2025
Source payment records
VEGZELMA
Normalized: vegzelma
Biological Celltrion USA Inc. $25.36 1 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $25.00 1 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $23.86 1 2025
Source payment records
XELJANZ
Normalized: xeljanz
Drug PFIZER INC. $23.86 1 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $23.08 1 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $23.08 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $20.18 1 2025
Source payment records
  • 2025-12-15 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $20.18 · Open Payments source
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $2.67 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
VOQUEZNA
voquezna
2025 Voquezna 2024 23
Beneficiary count suppressed
exact normalized Medicare Part D
XIFAXAN
xifaxan
2025 Xifaxan 2024 45 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
202 51
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
128 39
Phathom Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 VOQUEZNA
open payments reported associated product
CMS Open Payments — General Payments
90302 supporting records · 33442 recipient NPIs · example record 1219216983
Voquezna · 2024
Exact normalized brand match · 1 Part D row
23 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 TRULANCE
open payments reported associated product
CMS Open Payments — General Payments
2652 supporting records · 1501 recipient NPIs · example record 1231775445
Trulance · 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
45 22

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 Sodium440154
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates222213
FamotidineFamotidine20682
CreonLipase/Protease/Amylase20251
SucralfateSucralfate17670
Dexlansoprazole DrDexlansoprazole15643
Dicyclomine HclDicyclomine Hcl14561
LinzessLinaclotide12839
ZenpepLipase/Protease/Amylase7418
OmeprazoleOmeprazole6742
LactuloseLactulose4621
XifaxanRifaximin4522
HydrocortisoneHydrocortisone4230
Mesalamine ErMesalamine37suppressed
Colestipol HclColestipol Hcl31suppressed
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl2928
Nortriptyline HclNortriptyline Hcl27suppressed
VoqueznaVonoprazan Fumarate23suppressed
DexilantDexlansoprazole22suppressed
MesalamineMesalamine21suppressed
Procto-Med HcHydrocortisone21suppressed
OzempicSemaglutide17suppressed
LansoprazoleLansoprazole16suppressed
Omeprazole-Sodium BicarbonateOmeprazole/Sodium Bicarbonate15suppressed
MotegrityPrucalopride Succinate14suppressed
SuflavePeg 3350/Sod Sulf,chlr/Pot/Mag1414
MetronidazoleMetronidazole1212
TrulancePlecanatide12suppressed
NadololNadolol11suppressed
SutabSod Sulf/Pot Chloride/Mag Sulf1111

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 $390.37 · 17 records Takeda Pharmaceuticals U.S.A., Inc. ENTYVIO, IBSRELA, OMVOH, REZDIFFRA, RINVOQ, SKYRIZI, TREMFYA, VEGZELMA, VELSIPITY, VOQUEZNA, 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