Healthcare provider profile · identity verified

John Daniel Koontz, MD

Family Practice · RIVERSIDE, CA · NPI 1902194657

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium438179
Amlodipine BesylateAmlodipine Besylate291100
LisinoprilLisinopril250104
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen23449
Levothyroxine SodiumLevothyroxine Sodium20778
OmeprazoleOmeprazole18063
Losartan PotassiumLosartan Potassium17572
Albuterol Sulfate HfaAlbuterol Sulfate16394
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide16156
Rosuvastatin CalciumRosuvastatin Calcium14155
SimvastatinSimvastatin14052
Trazodone HclTrazodone Hcl13143
FurosemideFurosemide12948
GabapentinGabapentin12543
Metformin Hcl ErMetformin Hcl10947
PradaxaDabigatran Etexilate Mesylate10932
GlipizideGlipizide10839
HydrochlorothiazideHydrochlorothiazide10843
Potassium ChloridePotassium Chloride10851
Metoprolol TartrateMetoprolol Tartrate10242
AtenololAtenolol9642
MeloxicamMeloxicam9047
IbuprofenIbuprofen8932
Tamsulosin HclTamsulosin Hcl8931
Metformin HclMetformin Hcl8534
Terazosin HclTerazosin Hcl8131
PrednisonePrednisone7649
Alendronate SodiumAlendronate Sodium7124
Pantoprazole SodiumPantoprazole Sodium6422
Bisoprolol FumarateBisoprolol Fumarate6321
Humulin NInsulin Nph Human Isophane5717
Triamcinolone AcetonideTriamcinolone Acetonide5240
JardianceEmpagliflozin5120
Humulin N KwikpenInsulin Nph Human Isophane4514
Morphine Sulfate ErMorphine Sulfate45suppressed
CephalexinCephalexin4436
AllopurinolAllopurinol4216
CarvedilolCarvedilol4216
NaproxenNaproxen4217
Nano 2nd Gen Pen NeedlePen Needle, Diabetic4115
Sertraline HclSertraline Hcl3814
Citalopram HbrCitalopram Hydrobromide3713
Ondansetron OdtOndansetron3717
Hydralazine HclHydralazine Hcl3613
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml3611
LactuloseLactulose3514
SpironolactoneSpironolactone3412
Sumatriptan SuccinateSumatriptan Succinate33suppressed
AlvescoCiclesonide3214
AzithromycinAzithromycin3229
FinasterideFinasteride3114
OzempicSemaglutide31suppressed
Tramadol HclTramadol Hcl3112
Doxycycline MonohydrateDoxycycline Monohydrate3017
Montelukast SodiumMontelukast Sodium2914
LovastatinLovastatin28suppressed
ClopidogrelClopidogrel Bisulfate26suppressed
EliquisApixaban25suppressed
FamotidineFamotidine24suppressed
Fluticasone PropionateFluticasone Propionate24suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide2412
HydrocortisoneHydrocortisone2313
Acetaminophen-CodeineAcetaminophen With Codeine22suppressed
BreynaBudesonide/Formoterol Fumarate2212
EstradiolEstradiol21suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen21suppressed
Spiriva RespimatTiotropium Bromide21suppressed
Wixela InhubFluticasone Propion/Salmeterol2111
FluconazoleFluconazole2016
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1818
Fluoxetine HclFluoxetine Hcl18suppressed
EzetimibeEzetimibe17suppressed
MupirocinMupirocin1712
Insulin Glargine-YfgnInsulin Glargine-Yfgn16suppressed
Oxycodone HclOxycodone Hcl16suppressed
Pravastatin SodiumPravastatin Sodium16suppressed
Terbinafine HclTerbinafine Hcl1611
Veo Insulin SyringeSyringe And Needle,insulin,1ml16suppressed
AmoxicillinAmoxicillin1514
Azelastine HclAzelastine Hcl15suppressed
Ciprofloxacin HclCiprofloxacin Hcl1514
ValacyclovirValacyclovir Hcl15suppressed
MethocarbamolMethocarbamol14suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid14suppressed
AcyclovirAcyclovir13suppressed
Glipizide ErGlipizide13suppressed
SucralfateSucralfate13suppressed
CyclosporineCyclosporine12suppressed
Duloxetine HclDuloxetine Hcl12suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl12suppressed
TemazepamTemazepam12suppressed
Warfarin SodiumWarfarin Sodium12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed
ArexvyRsvpref3 Antigen/As01e/Pf1111
MetronidazoleMetronidazole1111

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
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