Healthcare provider profile · identity verified

Robert Gross, DO

Internal Medicine · LAKE ISABELLA, CA · NPI 1396827358

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
EliquisApixaban35015
Atorvastatin CalciumAtorvastatin Calcium23730
TradjentaLinagliptin189suppressed
OmeprazoleOmeprazole17829
FurosemideFurosemide16529
GabapentinGabapentin14722
XareltoRivaroxaban138suppressed
Potassium ChloridePotassium Chloride13433
Donepezil HclDonepezil Hcl11316
Levothyroxine SodiumLevothyroxine Sodium10711
Tamsulosin HclTamsulosin Hcl10615
JanuviaSitagliptin Phosphate73suppressed
JardianceEmpagliflozin67suppressed
Memantine HclMemantine Hcl64suppressed
ClopidogrelClopidogrel Bisulfate61suppressed
Metoprolol TartrateMetoprolol Tartrate6112
Metformin HclMetformin Hcl5912
Amlodipine BesylateAmlodipine Besylate57suppressed
BaclofenBaclofen52suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5124
Cefpodoxime ProxetilCefpodoxime Proxetil4542
MyrbetriqMirabegron45suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate37suppressed
Pantoprazole SodiumPantoprazole Sodium37suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog35suppressed
Losartan PotassiumLosartan Potassium35suppressed
FamotidineFamotidine34suppressed
AllopurinolAllopurinol32suppressed
Metoprolol SuccinateMetoprolol Succinate31suppressed
SpironolactoneSpironolactone30suppressed
Breo ElliptaFluticasone/Vilanterol27suppressed
PrednisonePrednisone2723
FenofibrateFenofibrate Nanocrystallized26suppressed
CarvedilolCarvedilol25suppressed
Carbidopa-LevodopaCarbidopa/Levodopa24suppressed
FinasterideFinasteride24suppressed
LisinoprilLisinopril24suppressed
BumetanideBumetanide22suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl21suppressed
Hydralazine HclHydralazine Hcl21suppressed
Alendronate SodiumAlendronate Sodium20suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2020
MeloxicamMeloxicam20suppressed
Novolin R FlexpenInsulin Regular, Human19suppressed
Quetiapine FumarateQuetiapine Fumarate19suppressed
Rosuvastatin CalciumRosuvastatin Calcium19suppressed
Ropinirole HclRopinirole Hcl18suppressed
Albuterol Sulfate HfaAlbuterol Sulfate1715
ClonazepamClonazepam17suppressed
Diltiazem 24hr ErDiltiazem Hcl17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
SimvastatinSimvastatin17suppressed
Ondansetron HclOndansetron Hcl16suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr15suppressed
LatanoprostLatanoprost14suppressed
SucralfateSucralfate14suppressed
ClonidineClonidine13suppressed
TrulicityDulaglutide13suppressed
AzithromycinAzithromycin1211
LetrozoleLetrozole12suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide12suppressed
MirtazapineMirtazapine12suppressed
Mometasone FuroateMometasone Furoate12suppressed
Raloxifene HclRaloxifene Hcl12suppressed
Flecainide AcetateFlecainide Acetate11suppressed
LamotrigineLamotrigine11suppressed
Metformin Hcl ErMetformin Hcl11suppressed
SimbrinzaBrinzolamide/Brimonidine Tart11suppressed
Tolterodine Tartrate ErTolterodine Tartrate11suppressed

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