Healthcare provider profile · identity verified

Thomas J. Stack, D.O.

Allopathic & Osteopathic Physicians|Family Medicine · MONTVILLE, NJ · NPI 1891808572

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 Thomas J. Stack, D.O. received $215.43 in general payments during 2025 across 2 reported records.

Phathom Pharmaceuticals, Inc. accounted for 55.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

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 56 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 23 claims for Trulicity by this doctor in 2024.

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

Payment overview · 2025

General Payments

$215.43

2 reported records · 2 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
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $120.2955.8%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $95.1444.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$215.432

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
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $120.29 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $95.14 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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
56 suppressed by CMS
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
23 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
Rosuvastatin CalciumRosuvastatin Calcium400117
Levothyroxine SodiumLevothyroxine Sodium30478
Atorvastatin CalciumAtorvastatin Calcium25071
Amlodipine BesylateAmlodipine Besylate19251
AlprazolamAlprazolam16363
AzithromycinAzithromycin154113
PrednisonePrednisone13791
Zolpidem TartrateZolpidem Tartrate11924
Metformin HclMetformin Hcl10831
HydrochlorothiazideHydrochlorothiazide9426
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide9427
Esomeprazole MagnesiumEsomeprazole Magnesium8631
Losartan PotassiumLosartan Potassium8429
FamotidineFamotidine7929
Metoprolol SuccinateMetoprolol Succinate7926
Escitalopram OxalateEscitalopram Oxalate7424
CefuroximeCefuroxime Axetil7359
GlimepirideGlimepiride6317
SynthroidLevothyroxine Sodium6113
Donepezil HclDonepezil Hcl60suppressed
EliquisApixaban6014
OmeprazoleOmeprazole6020
JardianceEmpagliflozin56suppressed
Montelukast SodiumMontelukast Sodium53suppressed
Metformin Hcl ErMetformin Hcl5116
OzempicSemaglutide51suppressed
MirtazapineMirtazapine49suppressed
Sertraline HclSertraline Hcl48suppressed
Olmesartan MedoxomilOlmesartan Medoxomil4712
AllopurinolAllopurinol4413
Tramadol HclTramadol Hcl4415
GabapentinGabapentin4111
Trelegy ElliptaFluticasone/Umeclidin/Vilanter41suppressed
Duloxetine HclDuloxetine Hcl4012
Bupropion XlBupropion Hcl3911
LisinoprilLisinopril39suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3812
FurosemideFurosemide37suppressed
Pantoprazole SodiumPantoprazole Sodium3711
FarxigaDapagliflozin Propanediol34suppressed
Tamsulosin HclTamsulosin Hcl3413
PregabalinPregabalin33suppressed
ValsartanValsartan3312
Albuterol Sulfate HfaAlbuterol Sulfate3219
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3226
MounjaroTirzepatide31suppressed
EzetimibeEzetimibe30suppressed
HydrocortisoneHydrocortisone30suppressed
Memantine HclMemantine Hcl30suppressed
MethylprednisoloneMethylprednisolone3025
Fluticasone PropionateFluticasone Propionate29suppressed
PaxlovidNirmatrelvir/Ritonavir2928
Trazodone HclTrazodone Hcl27suppressed
CelecoxibCelecoxib26suppressed
ClonazepamClonazepam24suppressed
SimvastatinSimvastatin24suppressed
Alendronate SodiumAlendronate Sodium23suppressed
Ondansetron OdtOndansetron2315
TrulicityDulaglutide23suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril22suppressed
IrbesartanIrbesartan22suppressed
KetoconazoleKetoconazole2211
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2116
ClopidogrelClopidogrel Bisulfate21suppressed
MeloxicamMeloxicam2112
MupirocinMupirocin2119
Doxycycline HyclateDoxycycline Hyclate2018
Lantus SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide20suppressed
RamiprilRamipril20suppressed
Breo ElliptaFluticasone/Vilanterol18suppressed
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide18suppressed
Meclizine HclMeclizine Hcl17suppressed
Paroxetine HclParoxetine Hcl17suppressed
Ciprofloxacin HclCiprofloxacin Hcl1615
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip1615
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
Venlafaxine Hcl ErVenlafaxine Hcl16suppressed
Fluoxetine HclFluoxetine Hcl15suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1514
TestosteroneTestosterone15suppressed
FinasterideFinasteride14suppressed
ValacyclovirValacyclovir Hcl1412
FluconazoleFluconazole13suppressed
Tolterodine Tartrate ErTolterodine Tartrate13suppressed
JanuviaSitagliptin Phosphate12suppressed
LevofloxacinLevofloxacin12suppressed
Mycophenolate MofetilMycophenolate Mofetil12suppressed
Potassium ChloridePotassium Chloride12suppressed
Solifenacin SuccinateSolifenacin Succinate12suppressed
Tobramycin-DexamethasoneTobramycin/Dexamethasone1211
XareltoRivaroxaban12suppressed
LorazepamLorazepam11suppressed
Pravastatin SodiumPravastatin Sodium11suppressed

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 $215.43 · 2 records Phathom Pharmaceuticals, Inc. VOQUEZNA, ZEPBOUND 3
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