Healthcare provider profile · identity verified

Michael Dean Hartwig, MD

Allopathic & Osteopathic Physicians|Family Medicine · PERRY, OK · NPI 1457354201

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 Dean Hartwig, MD received $648.88 in general payments during 2025 across 33 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 30.2% 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: Eliquis, Farxiga, Mounjaro, Ozempic, Rybelsus, Xifaxan.

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 201 claims for Farxiga by this doctor in 2024.

Lilly USA, 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 245 claims for Jardiance by this doctor in 2024.

Lilly USA, 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 MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 69 claims for Mounjaro by this doctor in 2024.

Lilly USA, 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Trulicity by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 127 claims for Ozempic by this doctor in 2024.

Novo Nordisk 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Rybelsus 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 197 claims for Eliquis 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Paxlovid 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 13 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

$648.88

33 reported records · 8 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
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $196.1430.2%92025
Lilly USA, LLC Unresolved — no canonical attribution shown $126.4119.5%82025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $96.7614.9%52025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $85.3613.2%42025
Novo Nordisk Inc Unresolved — no canonical attribution shown $77.9112.0%42025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $25.123.9%12025
PFIZER INC. Unresolved — no canonical attribution shown $21.263.3%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $19.923.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$648.8833

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
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $196.14 9 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $126.41 8 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $96.76 5 2025
Source payment records
  • 2025-02-19 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.17 · Open Payments source
  • 2025-05-05 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.07 · Open Payments source
  • 2025-06-10 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.68 · Open Payments source
  • 2025-08-11 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $18.90 · Open Payments source
  • 2025-12-11 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.94 · Open Payments source
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $61.57 3 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $34.65 2 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $26.78 1 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $25.12 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $23.93 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $22.24 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $21.26 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $19.92 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $16.34 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 197 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 201 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 69
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 127 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 47
Beneficiary count suppressed
exact normalized Medicare Part D
XIFAXAN
xifaxan
2025 Xifaxan 2024 13
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
201 24
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
245 25
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
69 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
26 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
127 18
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
47 suppressed by CMS
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
197 23
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
27 27
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
13 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
Levothyroxine SodiumLevothyroxine Sodium44169
Atorvastatin CalciumAtorvastatin Calcium32763
Rosuvastatin CalciumRosuvastatin Calcium28756
GabapentinGabapentin27947
Amlodipine BesylateAmlodipine Besylate26649
Losartan PotassiumLosartan Potassium24946
JardianceEmpagliflozin24525
Metoprolol SuccinateMetoprolol Succinate23142
FarxigaDapagliflozin Propanediol20124
EliquisApixaban19723
LisinoprilLisinopril19040
Tamsulosin HclTamsulosin Hcl18746
HydrochlorothiazideHydrochlorothiazide17936
FamotidineFamotidine17832
Pantoprazole SodiumPantoprazole Sodium17040
SimvastatinSimvastatin16731
Donepezil HclDonepezil Hcl15420
FurosemideFurosemide15126
Potassium ChloridePotassium Chloride14930
AllopurinolAllopurinol13222
Fluoxetine HclFluoxetine Hcl13027
CarvedilolCarvedilol12919
OzempicSemaglutide12718
Metformin Hcl ErMetformin Hcl12119
SpironolactoneSpironolactone10819
OmeprazoleOmeprazole10424
Benazepril HclBenazepril Hcl9919
Escitalopram OxalateEscitalopram Oxalate9313
Metoprolol TartrateMetoprolol Tartrate9015
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen8825
ClopidogrelClopidogrel Bisulfate8318
Fluticasone PropionateFluticasone Propionate7919
AtenololAtenolol7016
Buspirone HclBuspirone Hcl69suppressed
MounjaroTirzepatide69suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter6711
AlprazolamAlprazolam6614
MeloxicamMeloxicam6616
Quetiapine FumarateQuetiapine Fumarate66suppressed
PregabalinPregabalin63suppressed
Albuterol SulfateAlbuterol Sulfate6215
Metformin HclMetformin Hcl6211
CelecoxibCelecoxib6115
Doxazosin MesylateDoxazosin Mesylate60suppressed
Trazodone HclTrazodone Hcl6013
Tramadol HclTramadol Hcl5919
Sertraline HclSertraline Hcl58suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5613
Ciprofloxacin HclCiprofloxacin Hcl5347
EntrestoSacubitril/Valsartan53suppressed
Memantine HclMemantine Hcl51suppressed
Ondansetron OdtOndansetron4915
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog48suppressed
RybelsusSemaglutide47suppressed
ClonidineClonidine46suppressed
Pravastatin SodiumPravastatin Sodium46suppressed
LevetiracetamLevetiracetam45suppressed
JanuviaSitagliptin Phosphate44suppressed
Doxycycline HyclateDoxycycline Hyclate4329
NystatinNystatin4216
Citalopram HbrCitalopram Hydrobromide41suppressed
FinasterideFinasteride41suppressed
LamotrigineLamotrigine39suppressed
MirtazapineMirtazapine39suppressed
MyrbetriqMirabegron39suppressed
SucralfateSucralfate37suppressed
Montelukast SodiumMontelukast Sodium36suppressed
NitrofurantoinNitrofurantoin Macrocrystal3515
XareltoRivaroxaban34suppressed
SulfasalazineSulfasalazine33suppressed
TemazepamTemazepam33suppressed
Albuterol Sulfate HfaAlbuterol Sulfate3215
Diltiazem 24hr Er (Cd)Diltiazem Hcl31suppressed
Duloxetine HclDuloxetine Hcl31suppressed
IrbesartanIrbesartan31suppressed
Alendronate SodiumAlendronate Sodium3011
DigoxinDigoxin30suppressed
Oxybutynin ChlorideOxybutynin Chloride30suppressed
Zolpidem TartrateZolpidem Tartrate30suppressed
Clonidine HclClonidine Hcl29suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide29suppressed
Pioglitazone HclPioglitazone Hcl29suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2825
BaclofenBaclofen28suppressed
PrednisonePrednisone2811
PaxlovidNirmatrelvir/Ritonavir2727
MethylprednisoloneMethylprednisolone2624
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2619
TradjentaLinagliptin26suppressed
TrulicityDulaglutide26suppressed
Warfarin SodiumWarfarin Sodium26suppressed
Fiasp FlextouchInsulin Aspart (Niacinamide)25suppressed
FluconazoleFluconazole2413
Ropinirole HclRopinirole Hcl24suppressed
AmantadineAmantadine Hcl23suppressed
EnuloseLactulose23suppressed
Novolog FlexpenInsulin Aspart22suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate21suppressed
LatanoprostLatanoprost21suppressed
LoperamideLoperamide Hcl2113
NyamycNystatin21suppressed
Venlafaxine Hcl ErVenlafaxine Hcl21suppressed
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide20suppressed
EzetimibeEzetimibe20suppressed
AmoxicillinAmoxicillin1917
Terbinafine HclTerbinafine Hcl19suppressed
ValacyclovirValacyclovir Hcl19suppressed
AripiprazoleAripiprazole18suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol18suppressed
GlipizideGlipizide18suppressed
NaproxenNaproxen18suppressed
Ondansetron HclOndansetron Hcl1811
Pramipexole DihydrochloridePramipexole Di-Hcl18suppressed
JanumetSitagliptin Phos/Metformin Hcl17suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog17suppressed
Novolin NInsulin Nph Human Isophane17suppressed
SynthroidLevothyroxine Sodium17suppressed
AzithromycinAzithromycin1616
Colesevelam HclColesevelam Hcl16suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate16suppressed
Oxybutynin Chloride ErOxybutynin Chloride16suppressed
Tizanidine HclTizanidine Hcl16suppressed
Amiodarone HclAmiodarone Hcl15suppressed
Atrovent HfaIpratropium Bromide15suppressed
Bethanechol ChlorideBethanechol Chloride15suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate15suppressed
Dicyclomine HclDicyclomine Hcl15suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium15suppressed
FenofibrateFenofibrate Nanocrystallized15suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate15suppressed
Glipizide-MetforminGlipizide/Metformin Hcl14suppressed
PrimidonePrimidone14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa13suppressed
GlimepirideGlimepiride13suppressed
Olmesartan MedoxomilOlmesartan Medoxomil13suppressed
Potassium Citrate ErPotassium Citrate13suppressed
VascepaIcosapent Ethyl13suppressed
XifaxanRifaximin13suppressed
Xigduo XrDapaglifloz Propaned/Metformin13suppressed
AcyclovirAcyclovir12suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
Benztropine MesylateBenztropine Mesylate12suppressed
Bupropion HclBupropion Hcl12suppressed
Bupropion Hcl SrBupropion Hcl12suppressed
Bydureon BciseExenatide Microspheres12suppressed
ChlorthalidoneChlorthalidone12suppressed
Doxepin HclDoxepin Hcl12suppressed
EstradiolEstradiol12suppressed
Incruse ElliptaUmeclidinium Bromide12suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate12suppressed
Isosorbide DinitrateIsosorbide Dinitrate12suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride12suppressed
Memantine Hcl ErMemantine Hcl12suppressed
NovologInsulin Aspart12suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide12suppressed
Ranolazine ErRanolazine12suppressed
Divalproex SodiumDivalproex Sodium11suppressed
Timolol MaleateTimolol Maleate11suppressed
Verapamil ErVerapamil Hcl11suppressed
VraylarCariprazine 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 $648.88 · 33 records Bayer Healthcare Pharmaceuticals Inc. AIRSUPRA, BREZTRI, Cologuard Collection Kit, ELIQUIS, FARXIGA, INSPIRE, Kerendia, MOUNJARO, Ozempic, Rybelsus, Wegovy, XIFAXAN 9
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