Healthcare provider profile · identity verified

Onna Klooster, FNP

Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family · WESTMINSTER, CO · NPI 1013387851

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 Onna Klooster, FNP received $80.01 in general payments during 2025 across 4 reported records.

Lilly USA, LLC accounted for 50.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 4 associated products.

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

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 31 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

$80.01

4 reported records · 3 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
Lilly USA, LLC Unresolved — no canonical attribution shown $40.3750.5%22025
Dexcom, Inc. Unresolved — no canonical attribution shown $24.7330.9%12025
Amgen Inc. Unresolved — no canonical attribution shown $14.9118.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$80.014

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
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $40.37 2 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $40.37 2 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $24.73 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $14.91 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

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 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
31 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
Atorvastatin CalciumAtorvastatin Calcium32586
Levothyroxine SodiumLevothyroxine Sodium19050
OmeprazoleOmeprazole15948
LisinoprilLisinopril15251
GabapentinGabapentin15146
Losartan PotassiumLosartan Potassium11735
Metformin HclMetformin Hcl11329
Pantoprazole SodiumPantoprazole Sodium11331
Fluticasone PropionateFluticasone Propionate9637
Oxycodone HclOxycodone Hcl9216
Albuterol Sulfate HfaAlbuterol Sulfate8832
Amlodipine BesylateAmlodipine Besylate8530
Tizanidine HclTizanidine Hcl6717
PregabalinPregabalin5918
Trazodone HclTrazodone Hcl5622
FurosemideFurosemide5018
HydrochlorothiazideHydrochlorothiazide4614
Fluticasone-SalmeterolFluticasone Propion/Salmeterol4415
Tamsulosin HclTamsulosin Hcl4415
Rosuvastatin CalciumRosuvastatin Calcium4317
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen42suppressed
Metoprolol TartrateMetoprolol Tartrate3913
OzempicSemaglutide39suppressed
Potassium ChloridePotassium Chloride3911
Cyclobenzaprine HclCyclobenzaprine Hcl3821
Duloxetine HclDuloxetine Hcl3817
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen38suppressed
IbuprofenIbuprofen3813
SimvastatinSimvastatin3613
Metoprolol SuccinateMetoprolol Succinate3511
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3427
PrednisonePrednisone3320
Hydroxyzine HclHydroxyzine Hcl3212
MounjaroTirzepatide31suppressed
TrulicityDulaglutide31suppressed
Zolpidem TartrateZolpidem Tartrate31suppressed
Sertraline HclSertraline Hcl30suppressed
Alendronate SodiumAlendronate Sodium27suppressed
Spiriva HandihalerTiotropium Bromide27suppressed
Glipizide ErGlipizide26suppressed
LorazepamLorazepam26suppressed
Advair HfaFluticasone Propion/Salmeterol25suppressed
CelecoxibCelecoxib25suppressed
SynthroidLevothyroxine Sodium25suppressed
Fluoxetine HclFluoxetine Hcl24suppressed
Metformin Hcl ErMetformin Hcl24suppressed
Oxybutynin ChlorideOxybutynin Chloride24suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2414
AllopurinolAllopurinol23suppressed
Citalopram HbrCitalopram Hydrobromide23suppressed
Montelukast SodiumMontelukast Sodium22suppressed
EliquisApixaban21suppressed
FamotidineFamotidine21suppressed
Oxybutynin Chloride ErOxybutynin Chloride21suppressed
DiazepamDiazepam20suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog2011
SpironolactoneSpironolactone20suppressed
MethocarbamolMethocarbamol1912
Ropinirole HclRopinirole Hcl19suppressed
Varenicline TartrateVarenicline Tartrate19suppressed
LamotrigineLamotrigine18suppressed
LovastatinLovastatin18suppressed
Escitalopram OxalateEscitalopram Oxalate17suppressed
Hydralazine HclHydralazine Hcl17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
Venlafaxine Hcl ErVenlafaxine Hcl17suppressed
ClopidogrelClopidogrel Bisulfate16suppressed
Dicyclomine HclDicyclomine Hcl16suppressed
Bupropion XlBupropion Hcl15suppressed
Diclofenac SodiumDiclofenac Sodium15suppressed
Ondansetron OdtOndansetron15suppressed
Tramadol HclTramadol Hcl15suppressed
AzithromycinAzithromycin1412
Doxycycline HyclateDoxycycline Hyclate14suppressed
GemfibrozilGemfibrozil14suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide14suppressed
NaproxenNaproxen14suppressed
Quetiapine FumarateQuetiapine Fumarate14suppressed
AcyclovirAcyclovir13suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro13suppressed
Minocycline HclMinocycline Hcl13suppressed
Paroxetine HclParoxetine Hcl13suppressed
SucralfateSucralfate13suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter13suppressed
Amitriptyline HclAmitriptyline Hcl12suppressed
Chlorhexidine GluconateChlorhexidine Gluconate12suppressed
Ventolin HfaAlbuterol Sulfate12suppressed
EstradiolEstradiol11suppressed
Spiriva RespimatTiotropium Bromide11suppressed

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 $80.01 · 4 records Lilly USA, LLC Dexcom G6 Transmitter, EVENITY, MOUNJARO, ZEPBOUND 2
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