Healthcare provider profile · identity verified

Sherif Isshak Ibrahim, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · WINTER HAVEN, FL · NPI 1699897579

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 Sherif Isshak Ibrahim, MD received $282.81 in general payments during 2025 across 12 reported records.

Calliditas Therapeutics US Inc. accounted for 26.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 10 associated products.

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

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Farxiga by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LOKELMA as an associated drug or biological on 6897 records involving 4326 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Lokelma by this doctor in 2024.

Fresenius USA Marketing, 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 VELPHORO as an associated drug or biological on 8763 records involving 2642 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Velphoro by this doctor in 2024.

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

Payment overview · 2025

General Payments

$282.81

12 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
Calliditas Therapeutics US Inc. Unresolved — no canonical attribution shown $73.5526.0%22025
Ardelyx, Inc. Unresolved — no canonical attribution shown $38.5013.6%22025
Amgen Inc. Unresolved — no canonical attribution shown $27.289.7%12025
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $23.218.2%12025
Fresenius USA Marketing, Inc. Unresolved — no canonical attribution shown $22.067.8%12025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $21.567.6%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $21.347.5%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $19.566.9%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $18.866.7%12025
Travere Therapeutics, Inc. Unresolved — no canonical attribution shown $16.896.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$265.9211
Education$16.891

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
TARPEYO
Normalized: tarpeyo
Drug Calliditas Therapeutics US Inc. $73.55 2 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $38.50 2 2025
Source payment records
KRYSTEXXA
Normalized: krystexxa
Biological Amgen Inc. $27.28 1 2025
Source payment records
INJECTAFER
Normalized: injectafer
Drug Daiichi Sankyo Inc. $23.21 1 2025
Source payment records
VELPHORO
Normalized: velphoro
Drug Fresenius USA Marketing, Inc. $22.06 1 2025
Source payment records
JYNARQUE
Normalized: jynarque
Drug Otsuka America Pharmaceutical, Inc. $21.56 1 2025
Source payment records
BENLYSTA
Normalized: benlysta
Biological GlaxoSmithKline, LLC. $21.34 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $19.56 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $18.86 1 2025
Source payment records
Filspari
Normalized: filspari
Drug Travere Therapeutics, Inc. $16.89 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
FARXIGA
farxiga
2025 Farxiga 2024 20
Beneficiary count suppressed
exact normalized Medicare Part D
VELPHORO
velphoro
2025 Velphoro 2024 18
Beneficiary count suppressed
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
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
20 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 LOKELMA
open payments reported associated product
CMS Open Payments — General Payments
6897 supporting records · 4326 recipient NPIs · example record 1206131624
Lokelma · 2024
Exact normalized brand match · 1 Part D row
26 13
Fresenius USA Marketing, Inc.
Exact reporting entity; no affiliate inference
2025 VELPHORO
open payments reported associated product
CMS Open Payments — General Payments
8763 supporting records · 2642 recipient NPIs · example record 1244803773
Velphoro · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS

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
Olmesartan MedoxomilOlmesartan Medoxomil23481
Hydralazine HclHydralazine Hcl19172
CarvedilolCarvedilol17674
ChlorthalidoneChlorthalidone17272
Amlodipine BesylateAmlodipine Besylate16267
FurosemideFurosemide10638
Tamsulosin HclTamsulosin Hcl9038
Sevelamer CarbonateSevelamer Carbonate8928
Losartan PotassiumLosartan Potassium6027
AllopurinolAllopurinol5924
LisinoprilLisinopril5727
BumetanideBumetanide5523
IndapamideIndapamide4312
Metoprolol SuccinateMetoprolol Succinate4216
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim4138
Doxazosin MesylateDoxazosin Mesylate3714
Vitamin D2Ergocalciferol (Vitamin D2)3414
Atorvastatin CalciumAtorvastatin Calcium3314
KerendiaFinerenone33suppressed
GabapentinGabapentin3211
Isosorbide Mononitrate ErIsosorbide Mononitrate3012
Metoprolol TartrateMetoprolol Tartrate3018
Nifedipine ErNifedipine2712
SpironolactoneSpironolactone2711
VeltassaPatiromer Calcium Sorbitex27suppressed
LokelmaSodium Zirconium Cyclosilicate2613
FamotidineFamotidine25suppressed
Pantoprazole SodiumPantoprazole Sodium25suppressed
Ciprofloxacin HclCiprofloxacin Hcl2424
FinasterideFinasteride22suppressed
EliquisApixaban21suppressed
PrednisonePrednisone21suppressed
TacrolimusTacrolimus21suppressed
FarxigaDapagliflozin Propanediol20suppressed
Levothyroxine SodiumLevothyroxine Sodium19suppressed
Potassium ChloridePotassium Chloride18suppressed
ValsartanValsartan18suppressed
VelphoroSucroferric Oxyhydroxide18suppressed
Clonidine HclClonidine Hcl16suppressed
Calcium AcetateCalcium Acetate15suppressed
OmeprazoleOmeprazole13suppressed
Labetalol HclLabetalol Hcl12suppressed
Midodrine HclMidodrine Hcl12suppressed
Doxepin HclDoxepin Hcl11suppressed

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 $282.81 · 12 records Calliditas Therapeutics US Inc. BENLYSTA, FARXIGA, Filspari, IBSRELA, INJECTAFER, JARDIANCE, JYNARQUE, KRYSTEXXA, TARPEYO, VELPHORO 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