Healthcare provider profile · identity verified

Sean Anthony Cassleman, DO

Allopathic & Osteopathic Physicians|Internal Medicine · SAINT CLAIR SHORES, MI · NPI 1720404775

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 Sean Anthony Cassleman, DO received $231.29 in general payments during 2025 across 11 reported records.

Novo Nordisk Inc accounted for 25.4% 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: Mounjaro, Ozempic.

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 45 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 31 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 56 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 74 claims for Ozempic 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 60 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

$231.29

11 reported records · 9 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 $58.8125.4%32025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $26.1411.3%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $25.7011.1%12025
Corcept Therapeutics Unresolved — no canonical attribution shown $22.299.6%12025
Radius Health, Inc. Unresolved — no canonical attribution shown $21.849.4%12025
Verona Pharma, Inc. Unresolved — no canonical attribution shown $21.109.1%12025
Amgen Inc. Unresolved — no canonical attribution shown $20.508.9%12025
PFIZER INC. Unresolved — no canonical attribution shown $19.008.2%12025
Dentsply Sirona Inc Unresolved — no canonical attribution shown $15.916.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$231.2911

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 $34.06 2 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $26.14 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $25.70 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $24.75 1 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $22.29 1 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $21.84 1 2025
Source payment records
Ohtuvayre
Normalized: ohtuvayre
Drug Verona Pharma, Inc. $21.10 1 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $20.50 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $20.50 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $19.00 1 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $19.00 1 2025
Source payment records
MIDWEST
Normalized: midwest
Device Dentsply Sirona Inc $15.91 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
MOUNJARO
mounjaro
2025 Mounjaro 2024 31
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 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
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
45 13
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
31 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
56 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
74 13
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
60 16

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 Calcium410110
Levothyroxine SodiumLevothyroxine Sodium28869
Losartan PotassiumLosartan Potassium25075
Amlodipine BesylateAmlodipine Besylate18663
Rosuvastatin CalciumRosuvastatin Calcium16659
LisinoprilLisinopril16552
Metformin HclMetformin Hcl14741
HydrochlorothiazideHydrochlorothiazide13239
OmeprazoleOmeprazole12741
Tamsulosin HclTamsulosin Hcl11134
Albuterol Sulfate HfaAlbuterol Sulfate9129
Metoprolol SuccinateMetoprolol Succinate8731
Metoprolol TartrateMetoprolol Tartrate8224
Fluticasone PropionateFluticasone Propionate7841
CarvedilolCarvedilol7623
FarxigaDapagliflozin Propanediol7420
OzempicSemaglutide7413
AlprazolamAlprazolam7322
Montelukast SodiumMontelukast Sodium6617
FurosemideFurosemide6518
Pantoprazole SodiumPantoprazole Sodium6522
SpironolactoneSpironolactone6222
EliquisApixaban6016
PrednisonePrednisone5941
SimvastatinSimvastatin5919
Trazodone HclTrazodone Hcl5921
TrulicityDulaglutide56suppressed
GabapentinGabapentin5414
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5315
AtenololAtenolol5113
Metformin Hcl ErMetformin Hcl5015
Cyclobenzaprine HclCyclobenzaprine Hcl4617
JardianceEmpagliflozin4513
FamotidineFamotidine4414
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4414
AllopurinolAllopurinol4313
Alendronate SodiumAlendronate Sodium42suppressed
ClopidogrelClopidogrel Bisulfate4014
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen40suppressed
EzetimibeEzetimibe3713
Sertraline HclSertraline Hcl3713
Liothyronine SodiumLiothyronine Sodium35suppressed
Citalopram HbrCitalopram Hydrobromide3412
Trelegy ElliptaFluticasone/Umeclidin/Vilanter34suppressed
Venlafaxine Hcl ErVenlafaxine Hcl34suppressed
Azelastine HclAzelastine Hcl3214
Duloxetine HclDuloxetine Hcl32suppressed
MounjaroTirzepatide31suppressed
Pravastatin SodiumPravastatin Sodium29suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog28suppressed
Potassium ChloridePotassium Chloride27suppressed
AzithromycinAzithromycin2518
Doxycycline HyclateDoxycycline Hyclate2522
ValacyclovirValacyclovir Hcl24suppressed
Escitalopram OxalateEscitalopram Oxalate21suppressed
IbuprofenIbuprofen21suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2114
KetoconazoleKetoconazole2014
Nifedipine ErNifedipine20suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2013
Ondansetron OdtOndansetron2012
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid20suppressed
ChlorthalidoneChlorthalidone19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1814
GlipizideGlipizide18suppressed
JanuviaSitagliptin Phosphate18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl17suppressed
GlimepirideGlimepiride17suppressed
MeloxicamMeloxicam17suppressed
Pioglitazone HclPioglitazone Hcl17suppressed
FinasterideFinasteride16suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol16suppressed
XareltoRivaroxaban16suppressed
GemfibrozilGemfibrozil15suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
SymbicortBudesonide/Formoterol Fumarate15suppressed
Bupropion XlBupropion Hcl14suppressed
Ondansetron HclOndansetron Hcl14suppressed
Triamcinolone AcetonideTriamcinolone Acetonide13suppressed
Enalapril MaleateEnalapril Maleate12suppressed
Methylphenidate ErMethylphenidate Hcl12suppressed
Buspirone HclBuspirone Hcl11suppressed
Dicyclomine HclDicyclomine Hcl11suppressed
Donepezil HclDonepezil Hcl11suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate11suppressed
Incruse ElliptaUmeclidinium Bromide11suppressed
Ropinirole HclRopinirole Hcl11suppressed
TemazepamTemazepam11suppressed
Varenicline TartrateVarenicline Tartrate11suppressed
Ventolin HfaAlbuterol Sulfate11suppressed

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 $231.29 · 11 records Novo Nordisk Inc Korlym, MIDWEST, MOUNJARO, NURTEC ODT, OTEZLA, Ohtuvayre, Ozempic, REPATHA, Tymlos, Wegovy, XYOSTED, ZAVZPRET 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