Healthcare provider profile · identity verified

Marcus Wollak

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · SOUTH HAVEN, MI · NPI 1417572827

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 Marcus Wollak received $35.52 in general payments during 2025 across 2 reported records.

Novo Nordisk Inc accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

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 50 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$35.52

2 reported records · 1 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $35.52100.0%22025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$35.522

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
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $20.91 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $14.61 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $14.61 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
Ozempic
ozempic
2025 Ozempic 2024 50 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
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
50 12

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 Calcium588175
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen28148
LisinoprilLisinopril27889
OmeprazoleOmeprazole23990
Amlodipine BesylateAmlodipine Besylate23078
Losartan PotassiumLosartan Potassium21863
AlprazolamAlprazolam19732
Levothyroxine SodiumLevothyroxine Sodium19457
GabapentinGabapentin19161
Metformin Hcl ErMetformin Hcl15646
Metoprolol SuccinateMetoprolol Succinate15652
Tamsulosin HclTamsulosin Hcl14347
SimvastatinSimvastatin13640
EliquisApixaban12432
Trazodone HclTrazodone Hcl10343
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide9933
Sertraline HclSertraline Hcl9423
Escitalopram OxalateEscitalopram Oxalate9227
Tramadol HclTramadol Hcl9118
Fluticasone PropionateFluticasone Propionate8646
Duloxetine HclDuloxetine Hcl8126
HydrochlorothiazideHydrochlorothiazide7927
Pantoprazole SodiumPantoprazole Sodium7828
Albuterol Sulfate HfaAlbuterol Sulfate7742
Rosuvastatin CalciumRosuvastatin Calcium7722
Bupropion XlBupropion Hcl7317
Metformin HclMetformin Hcl6927
Metoprolol TartrateMetoprolol Tartrate6925
Trelegy ElliptaFluticasone/Umeclidin/Vilanter6913
MeloxicamMeloxicam6821
Pravastatin SodiumPravastatin Sodium6718
Zolpidem TartrateZolpidem Tartrate6713
Fluoxetine HclFluoxetine Hcl6617
BaclofenBaclofen6013
FurosemideFurosemide5723
Cyclobenzaprine HclCyclobenzaprine Hcl5620
Hydroxyzine HclHydroxyzine Hcl5420
OzempicSemaglutide5012
Alendronate SodiumAlendronate Sodium4911
PrednisonePrednisone4936
AllopurinolAllopurinol4817
Lantus SolostarInsulin Glargine,hum.Rec.Anlog4814
Montelukast SodiumMontelukast Sodium4419
ClonazepamClonazepam4112
FamotidineFamotidine4113
Glipizide ErGlipizide41suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen41suppressed
Potassium ChloridePotassium Chloride4117
CarvedilolCarvedilol4013
Citalopram HbrCitalopram Hydrobromide3812
Amitriptyline HclAmitriptyline Hcl3713
EzetimibeEzetimibe3714
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3612
AtenololAtenolol3512
JardianceEmpagliflozin3513
Pramipexole DihydrochloridePramipexole Di-Hcl34suppressed
PregabalinPregabalin34suppressed
ValacyclovirValacyclovir Hcl34suppressed
Venlafaxine Hcl ErVenlafaxine Hcl33suppressed
XareltoRivaroxaban33suppressed
JanuviaSitagliptin Phosphate3112
Morphine Sulfate ErMorphine Sulfate31suppressed
ClopidogrelClopidogrel Bisulfate29suppressed
Ventolin HfaAlbuterol Sulfate2713
TopiramateTopiramate2611
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril25suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2514
Bupropion Hcl SrBupropion Hcl24suppressed
FinasterideFinasteride2411
Acetaminophen-CodeineAcetaminophen With Codeine23suppressed
Benazepril HclBenazepril Hcl23suppressed
Oxycodone HclOxycodone Hcl23suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog23suppressed
Zolpidem Tartrate ErZolpidem Tartrate23suppressed
GlimepirideGlimepiride22suppressed
IbuprofenIbuprofen22suppressed
Incruse ElliptaUmeclidinium Bromide22suppressed
LovastatinLovastatin22suppressed
Methylphenidate HclMethylphenidate Hcl22suppressed
Doxycycline HyclateDoxycycline Hyclate2116
Ondansetron OdtOndansetron20suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1817
Betamethasone DipropionateBetamethasone Dipropionate18suppressed
MounjaroTirzepatide18suppressed
NitroglycerinNitroglycerin18suppressed
Desvenlafaxine Succinate ErDesvenlafaxine Succinate17suppressed
DiazepamDiazepam17suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate17suppressed
Meclizine HclMeclizine Hcl17suppressed
Advair HfaFluticasone Propion/Salmeterol16suppressed
Liothyronine SodiumLiothyronine Sodium16suppressed
RizatriptanRizatriptan Benzoate16suppressed
TorsemideTorsemide16suppressed
ChlorthalidoneChlorthalidone15suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol15suppressed
MethocarbamolMethocarbamol15suppressed
Buspirone HclBuspirone Hcl14suppressed
Doxepin HclDoxepin Hcl14suppressed
Sildenafil CitrateSildenafil Citrate14suppressed
TemazepamTemazepam14suppressed
ZaleplonZaleplon14suppressed
Morphine SulfateMorphine Sulfate13suppressed
Ropinirole HclRopinirole Hcl13suppressed
TrulicityDulaglutide13suppressed
Betamethasone ValerateBetamethasone Valerate12suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine12suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin12suppressed
GemfibrozilGemfibrozil12suppressed
GlipizideGlipizide12suppressed
Guanfacine Hcl ErGuanfacine Hcl12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Dilt-XrDiltiazem Hcl11suppressed
Doxazosin MesylateDoxazosin Mesylate11suppressed
EstradiolEstradiol11suppressed
LansoprazoleLansoprazole11suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1111
Pioglitazone HclPioglitazone Hcl11suppressed
SavellaMilnacipran Hcl11suppressed
Tizanidine HclTizanidine Hcl11suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic11suppressed
Verapamil ErVerapamil 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 $35.52 · 2 records Novo Nordisk Inc Ozempic, Rybelsus, Wegovy 1
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