Healthcare provider profile · identity verified

Michael Koehler, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · OKLAHOMA CITY, OK · NPI 1902031487

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 Michael Koehler, MD received $583.36 in general payments during 2025 across 37 reported records.

PFIZER INC. accounted for 29.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 6 associated products.

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

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 BRILINTA as an associated drug or biological on 993 records involving 512 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Brilinta 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 FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 92 claims for Farxiga by this doctor in 2024.

Boehringer Ingelheim 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 74 claims for Jardiance by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ENTRESTO as an associated drug or biological on 9346 records involving 6254 distinct recipient NPIs. Public Medicare Part D data also shows 114 claims for Entresto 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 720 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$583.36

37 reported records · 6 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
PFIZER INC. Unresolved — no canonical attribution shown $170.9429.3%132025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $163.0327.9%102025
Amgen Inc. Unresolved — no canonical attribution shown $157.8327.1%92025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $56.889.8%32025
Abbott Laboratories Unresolved — no canonical attribution shown $17.853.1%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $16.832.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$583.3637

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
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $170.94 13 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $163.03 10 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $157.83 9 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $56.88 3 2025
Source payment records
MITRACLIP
Normalized: mitraclip
Device Abbott Laboratories $17.85 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $16.83 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
ELIQUIS
eliquis
2025 Eliquis 2024 720 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 92 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 74 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 BRILINTA
open payments reported associated product
CMS Open Payments — General Payments
993 supporting records · 512 recipient NPIs · example record 1206131430
Brilinta · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
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
92 28
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
74 15
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 ENTRESTO
open payments reported associated product
CMS Open Payments — General Payments
9346 supporting records · 6254 recipient NPIs · example record 1200004797
Entresto · 2024
Exact normalized brand match · 1 Part D row
114 25
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
720 149

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
Atorvastatin CalciumAtorvastatin Calcium843254
EliquisApixaban720149
Metoprolol SuccinateMetoprolol Succinate617190
Amlodipine BesylateAmlodipine Besylate485149
Metoprolol TartrateMetoprolol Tartrate442136
FurosemideFurosemide407133
LisinoprilLisinopril388117
CarvedilolCarvedilol35898
Losartan PotassiumLosartan Potassium322102
ClopidogrelClopidogrel Bisulfate29287
Potassium ChloridePotassium Chloride24970
Isosorbide Mononitrate ErIsosorbide Mononitrate20260
EzetimibeEzetimibe18346
TorsemideTorsemide18366
Rosuvastatin CalciumRosuvastatin Calcium13742
HydrochlorothiazideHydrochlorothiazide12841
XareltoRivaroxaban12529
Ranolazine ErRanolazine12243
EntrestoSacubitril/Valsartan11425
Warfarin SodiumWarfarin Sodium9529
FarxigaDapagliflozin Propanediol9228
TelmisartanTelmisartan8525
SpironolactoneSpironolactone8432
Pravastatin SodiumPravastatin Sodium7926
Olmesartan MedoxomilOlmesartan Medoxomil7622
Diltiazem 24hr Er (Cd)Diltiazem Hcl7420
JardianceEmpagliflozin7415
Repatha SureclickEvolocumab7314
ChlorthalidoneChlorthalidone6520
Hydralazine HclHydralazine Hcl6523
ClonidineClonidine5814
NitroglycerinNitroglycerin5328
DigoxinDigoxin4716
Amiodarone HclAmiodarone Hcl4614
Clonidine HclClonidine Hcl4320
AtenololAtenolol3812
Midodrine HclMidodrine Hcl3611
Repatha SyringeEvolocumab36suppressed
CilostazolCilostazol32suppressed
IrbesartanIrbesartan30suppressed
Nifedipine ErNifedipine26suppressed
Doxazosin MesylateDoxazosin Mesylate24suppressed
Flecainide AcetateFlecainide Acetate24suppressed
SimvastatinSimvastatin22suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide20suppressed
Verapamil ErVerapamil Hcl19suppressed
Diltiazem HclDiltiazem Hcl18suppressed
Pantoprazole SodiumPantoprazole Sodium18suppressed
RamiprilRamipril18suppressed
Bisoprolol FumarateBisoprolol Fumarate17suppressed
Enalapril MaleateEnalapril Maleate16suppressed
ValsartanValsartan16suppressed
Benazepril HclBenazepril Hcl15suppressed
BrilintaTicagrelor14suppressed
Candesartan CilexetilCandesartan Cilexetil14suppressed
FenofibrateFenofibrate Nanocrystallized13suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide13suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide13suppressed
Praluent PenAlirocumab13suppressed
Prasugrel HclPrasugrel Hcl13suppressed
SotalolSotalol Hcl12suppressed
FenofibrateFenofibrate11suppressed
MetolazoneMetolazone11suppressed
OmeprazoleOmeprazole11suppressed

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 $583.36 · 37 records PFIZER INC. ELIQUIS, FARXIGA, JARDIANCE, LEQVIO, MITRACLIP, REPATHA 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