Healthcare provider profile · identity verified

Katherine E Ruff, DNP, ARNP, FNP-BC

Allopathic & Osteopathic Physicians|Family Medicine · MAQUOKETA, IA · NPI 1225699820

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 Katherine E Ruff, DNP, ARNP, FNP-BC received $279.06 in general payments during 2025 across 14 reported records.

ABBVIE INC. accounted for 25.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 11 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Eliquis, Farxiga, Jardiance.

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 18 claims for Farxiga by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 16 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Jardiance 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 24 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

$279.06

14 reported records · 7 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
ABBVIE INC. Unresolved — no canonical attribution shown $72.3525.9%32025
PFIZER INC. Unresolved — no canonical attribution shown $70.9125.4%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $56.2620.2%32025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $26.759.6%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $20.467.3%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $18.256.5%12025
Amgen Inc. Unresolved — no canonical attribution shown $14.085.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$279.0614

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
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $72.35 3 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $72.35 3 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $70.91 4 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $68.91 3 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $48.63 3 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $22.28 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $20.46 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $18.25 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $14.10 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $14.10 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $14.08 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 24 exact normalized Medicare Part D
FARXIGA
farxiga
2025 Farxiga 2024 18
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 16
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
18 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
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
16 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
24 11

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 Calcium14073
LisinoprilLisinopril11362
Amlodipine BesylateAmlodipine Besylate11264
PrednisonePrednisone10387
MeloxicamMeloxicam10131
OmeprazoleOmeprazole9548
Levothyroxine SodiumLevothyroxine Sodium8339
Metoprolol SuccinateMetoprolol Succinate7141
Pantoprazole SodiumPantoprazole Sodium6839
FurosemideFurosemide6333
Doxycycline MonohydrateDoxycycline Monohydrate5956
Metformin HclMetformin Hcl5731
Albuterol Sulfate HfaAlbuterol Sulfate5629
Montelukast SodiumMontelukast Sodium5232
OzempicSemaglutide5115
GabapentinGabapentin4426
Losartan PotassiumLosartan Potassium4125
Trazodone HclTrazodone Hcl3922
BaclofenBaclofen3720
Diclofenac SodiumDiclofenac Sodium3626
Triamcinolone AcetonideTriamcinolone Acetonide3522
Fluticasone PropionateFluticasone Propionate3424
SimvastatinSimvastatin3416
Metformin Hcl ErMetformin Hcl31suppressed
AtenololAtenolol3018
Escitalopram OxalateEscitalopram Oxalate3013
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2928
Citalopram HbrCitalopram Hydrobromide2917
Pravastatin SodiumPravastatin Sodium2911
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid2918
HydrochlorothiazideHydrochlorothiazide2819
FluconazoleFluconazole2712
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim2723
ClonazepamClonazepam26suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog25suppressed
Potassium ChloridePotassium Chloride2517
EliquisApixaban2411
FamotidineFamotidine2416
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen24suppressed
CephalexinCephalexin2320
Metoprolol TartrateMetoprolol Tartrate23suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol22suppressed
Fluoxetine HclFluoxetine Hcl2211
AlprazolamAlprazolam21suppressed
Rosuvastatin CalciumRosuvastatin Calcium2113
AzithromycinAzithromycin2020
Sertraline HclSertraline Hcl2015
Tramadol HclTramadol Hcl1913
Warfarin SodiumWarfarin Sodium19suppressed
AllopurinolAllopurinol1813
CelecoxibCelecoxib18suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl18suppressed
Duloxetine HclDuloxetine Hcl1812
FarxigaDapagliflozin Propanediol18suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide1813
GlimepirideGlimepiride17suppressed
LorazepamLorazepam17suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl17suppressed
SpironolactoneSpironolactone1711
Tamsulosin HclTamsulosin Hcl1713
IrbesartanIrbesartan16suppressed
JardianceEmpagliflozin16suppressed
Ropinirole HclRopinirole Hcl16suppressed
EzetimibeEzetimibe15suppressed
FenofibrateFenofibrate Nanocrystallized15suppressed
LevofloxacinLevofloxacin1513
Ondansetron OdtOndansetron1412
Tizanidine HclTizanidine Hcl14suppressed
IbuprofenIbuprofen13suppressed
Buspirone HclBuspirone Hcl12suppressed
ClopidogrelClopidogrel Bisulfate12suppressed
MupirocinMupirocin1211
MyrbetriqMirabegron12suppressed
Dicyclomine HclDicyclomine Hcl11suppressed
Glipizide ErGlipizide11suppressed
Hydroxyzine HclHydroxyzine Hcl11suppressed
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha11suppressed
Prazosin HclPrazosin Hcl11suppressed
SucralfateSucralfate11suppressed
XareltoRivaroxaban11suppressed

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 $279.06 · 14 records ABBVIE INC. Cologuard Collection Kit, ELIQUIS, FARXIGA, JARDIANCE, MOUNJARO, NURTEC ODT, QULIPTA, REPATHA, UBRELVY, ZAVZPRET, ZEPBOUND 4
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