Healthcare provider profile · identity verified

David Joseph Knapp, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · SIERRA VISTA, AZ · NPI 1376735613

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 David Joseph Knapp, M.D. received $60.21 in general payments during 2025 across 2 reported records.

Lilly USA, LLC accounted for 74.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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 38 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 14 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

$60.21

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
Lilly USA, LLC Unresolved — no canonical attribution shown $45.0074.7%12025
Kowa Pharmaceuticals America, Inc. Unresolved — no canonical attribution shown $15.2125.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Education$45.001
Food and Beverage$15.211

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
ZORYVE
Normalized: zoryve
Drug Kowa Pharmaceuticals America, Inc. $15.21 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
38 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
14 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 Calcium29184
Amlodipine BesylateAmlodipine Besylate26277
LisinoprilLisinopril23165
Levothyroxine SodiumLevothyroxine Sodium21556
Losartan PotassiumLosartan Potassium20361
Metformin HclMetformin Hcl12434
SimvastatinSimvastatin10728
AlprazolamAlprazolam10525
Metoprolol SuccinateMetoprolol Succinate10428
Potassium ChloridePotassium Chloride10031
HydrochlorothiazideHydrochlorothiazide9626
GabapentinGabapentin9130
Pantoprazole SodiumPantoprazole Sodium9033
Zolpidem TartrateZolpidem Tartrate8015
OmeprazoleOmeprazole7823
Albuterol Sulfate HfaAlbuterol Sulfate6428
Tamsulosin HclTamsulosin Hcl6419
FurosemideFurosemide6023
Rosuvastatin CalciumRosuvastatin Calcium6020
FamotidineFamotidine5716
Metoprolol TartrateMetoprolol Tartrate5417
AllopurinolAllopurinol5017
Fluticasone PropionateFluticasone Propionate4815
GlipizideGlipizide4611
MeloxicamMeloxicam4217
Warfarin SodiumWarfarin Sodium39suppressed
XareltoRivaroxaban39suppressed
JardianceEmpagliflozin38suppressed
Sertraline HclSertraline Hcl37suppressed
Citalopram HbrCitalopram Hydrobromide36suppressed
Pravastatin SodiumPravastatin Sodium3613
CarvedilolCarvedilol3412
EliquisApixaban3412
Montelukast SodiumMontelukast Sodium34suppressed
Amitriptyline HclAmitriptyline Hcl33suppressed
AtenololAtenolol30suppressed
Escitalopram OxalateEscitalopram Oxalate3011
Trazodone HclTrazodone Hcl30suppressed
LorazepamLorazepam29suppressed
SynthroidLevothyroxine Sodium29suppressed
Glipizide ErGlipizide28suppressed
Tramadol HclTramadol Hcl2813
SpironolactoneSpironolactone26suppressed
AzithromycinAzithromycin2424
FinasterideFinasteride24suppressed
Glipizide-MetforminGlipizide/Metformin Hcl24suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide24suppressed
ClopidogrelClopidogrel Bisulfate23suppressed
Alendronate SodiumAlendronate Sodium22suppressed
Klor-Con 10Potassium Chloride22suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter22suppressed
AcyclovirAcyclovir20suppressed
Benazepril HclBenazepril Hcl19suppressed
GemfibrozilGemfibrozil18suppressed
ChlorthalidoneChlorthalidone17suppressed
Clonidine HclClonidine Hcl16suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog15suppressed
Breo ElliptaFluticasone/Vilanterol15suppressed
EstradiolEstradiol15suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15suppressed
Meclizine HclMeclizine Hcl15suppressed
TorsemideTorsemide15suppressed
CelecoxibCelecoxib14suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl14suppressed
Diclofenac SodiumDiclofenac Sodium14suppressed
Enbrel SureclickEtanercept14suppressed
IbuprofenIbuprofen14suppressed
LidocaineLidocaine14suppressed
TrulicityDulaglutide14suppressed
Ropinirole HclRopinirole Hcl13suppressed
Zolpidem Tartrate ErZolpidem Tartrate13suppressed
Fluoxetine HclFluoxetine Hcl12suppressed
Tolterodine Tartrate ErTolterodine Tartrate12suppressed
FenofibrateFenofibrate Nanocrystallized11suppressed
GlimepirideGlimepiride11suppressed
OzempicSemaglutide11suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid11suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide11suppressed

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 $60.21 · 2 records Lilly USA, LLC ZORYVE 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