Healthcare provider profile · identity verified

Markos I. Koutsos, M.D.

Allopathic & Osteopathic Physicians|General Practice · BROOKLYN, NY · NPI 1295818680

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 Markos I. Koutsos, M.D. received $216.26 in general payments during 2025 across 10 reported records.

ABBVIE INC. accounted for 41.3% 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: 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Linzess 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 38 claims for Synthroid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$216.26

10 reported records · 7 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 $89.2341.3%42025
PFIZER INC. Unresolved — no canonical attribution shown $25.3911.7%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $21.9310.1%12025
Intra-Sana Laboratories Unresolved — no canonical attribution shown $21.469.9%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $20.679.6%12025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $20.199.3%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $17.398.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$216.2610

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. $89.23 4 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $62.78 3 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $25.39 1 2025
Source payment records
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $21.93 1 2025
Source payment records
GLYCATE
Normalized: glycate
Drug Intra-Sana Laboratories $21.46 1 2025
Source payment records
RELTONE 200 MG
Normalized: reltone 200 mg
Drug Intra-Sana Laboratories $21.46 1 2025
Source payment records
RELTONE 400 MG
Normalized: reltone 400 mg
Drug Intra-Sana Laboratories $21.46 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $20.67 1 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $20.19 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $17.39 1 2025
Source payment records
  • 2025-08-04 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.39 · Open Payments source

* 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
LINZESS
linzess
2025 Linzess 2024 31
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
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
31 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
38 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
Pantoprazole SodiumPantoprazole Sodium27579
Amlodipine BesylateAmlodipine Besylate14639
Atorvastatin CalciumAtorvastatin Calcium10828
Rosuvastatin CalciumRosuvastatin Calcium10828
SimvastatinSimvastatin8321
Metformin HclMetformin Hcl8220
Levothyroxine SodiumLevothyroxine Sodium8020
Zolpidem TartrateZolpidem Tartrate78suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6815
FamotidineFamotidine6220
Losartan PotassiumLosartan Potassium6218
Metoprolol SuccinateMetoprolol Succinate5815
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates5757
OmeprazoleOmeprazole5316
AlprazolamAlprazolam4814
SynthroidLevothyroxine Sodium38suppressed
FurosemideFurosemide34suppressed
Dexlansoprazole DrDexlansoprazole33suppressed
HydrochlorothiazideHydrochlorothiazide31suppressed
LinzessLinaclotide31suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide31suppressed
ClopidogrelClopidogrel Bisulfate30suppressed
Olmesartan MedoxomilOlmesartan Medoxomil29suppressed
LansoprazoleLansoprazole28suppressed
AzithromycinAzithromycin2420
Albuterol Sulfate HfaAlbuterol Sulfate23suppressed
RamiprilRamipril23suppressed
LisinoprilLisinopril20suppressed
Tamsulosin HclTamsulosin Hcl20suppressed
Ciprofloxacin HclCiprofloxacin Hcl1917
AllopurinolAllopurinol18suppressed
Metoprolol TartrateMetoprolol Tartrate18suppressed
Sertraline HclSertraline Hcl17suppressed
Enalapril MaleateEnalapril Maleate16suppressed
EzetimibeEzetimibe15suppressed
Potassium ChloridePotassium Chloride15suppressed
ValsartanValsartan15suppressed
GabapentinGabapentin14suppressed
Montelukast SodiumMontelukast Sodium14suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med13suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine13suppressed
Pravastatin SodiumPravastatin Sodium13suppressed
TravoprostTravoprost13suppressed
ValacyclovirValacyclovir Hcl13suppressed
ZenpepLipase/Protease/Amylase13suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium12suppressed
Repatha SureclickEvolocumab12suppressed
SucralfateSucralfate12suppressed
AtenololAtenolol11suppressed
CarvedilolCarvedilol11suppressed
IrbesartanIrbesartan11suppressed
JentaduetoLinagliptin/Metformin Hcl11suppressed
Metoclopramide HclMetoclopramide 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 $216.26 · 10 records ABBVIE INC. CREON, ENTYVIO, GLYCATE, LINZESS, RELTONE 200 MG, RELTONE 400 MG, REZDIFFRA, VELSIPITY, VOQUEZNA, XIFAXAN 2
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