Healthcare provider profile · identity verified

Catherine Gentemann, M.D.

Internal Medicine · HUNTINGTON BEACH, CA · NPI 1215043526

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 Calcium28179
Levothyroxine SodiumLevothyroxine Sodium23066
Rosuvastatin CalciumRosuvastatin Calcium20357
Losartan PotassiumLosartan Potassium17256
Amlodipine BesylateAmlodipine Besylate15644
LisinoprilLisinopril10131
GabapentinGabapentin9936
Metoprolol SuccinateMetoprolol Succinate9027
Pantoprazole SodiumPantoprazole Sodium8823
HydrochlorothiazideHydrochlorothiazide8224
OmeprazoleOmeprazole8124
TrulicityDulaglutide77suppressed
Escitalopram OxalateEscitalopram Oxalate7622
Zolpidem TartrateZolpidem Tartrate7418
AlprazolamAlprazolam7328
Metformin HclMetformin Hcl6927
Trazodone HclTrazodone Hcl6216
EstradiolEstradiol5923
MeloxicamMeloxicam5219
Sertraline HclSertraline Hcl5212
Tramadol HclTramadol Hcl5111
AtenololAtenolol4814
Albuterol Sulfate HfaAlbuterol Sulfate4516
OzempicSemaglutide42suppressed
ValsartanValsartan4211
Montelukast SodiumMontelukast Sodium41suppressed
Metoprolol TartrateMetoprolol Tartrate4012
Sumatriptan SuccinateSumatriptan Succinate40suppressed
Alendronate SodiumAlendronate Sodium3813
FamotidineFamotidine3811
SimvastatinSimvastatin3712
LorazepamLorazepam3611
SynthroidLevothyroxine Sodium36suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide35suppressed
Tamsulosin HclTamsulosin Hcl3212
Donepezil HclDonepezil Hcl31suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium30suppressed
NaproxenNaproxen30suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide29suppressed
MyrbetriqMirabegron29suppressed
Memantine HclMemantine Hcl27suppressed
EliquisApixaban26suppressed
Pravastatin SodiumPravastatin Sodium26suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2619
Duloxetine HclDuloxetine Hcl25suppressed
MirtazapineMirtazapine25suppressed
Buspirone HclBuspirone Hcl24suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine23suppressed
Fluoxetine HclFluoxetine Hcl23suppressed
Clonidine HclClonidine Hcl22suppressed
Benazepril HclBenazepril Hcl21suppressed
Pioglitazone HclPioglitazone Hcl21suppressed
Propranolol HclPropranolol Hcl20suppressed
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide19suppressed
Ondansetron OdtOndansetron19suppressed
RamiprilRamipril19suppressed
CelecoxibCelecoxib18suppressed
LansoprazoleLansoprazole18suppressed
LovastatinLovastatin18suppressed
PregabalinPregabalin18suppressed
Bupropion XlBupropion Hcl17suppressed
Doxycycline HyclateDoxycycline Hyclate1712
Metformin Hcl ErMetformin Hcl17suppressed
Paroxetine HclParoxetine Hcl17suppressed
AcyclovirAcyclovir16suppressed
Azelastine HclAzelastine Hcl16suppressed
DutasterideDutasteride16suppressed
LevetiracetamLevetiracetam16suppressed
Raloxifene HclRaloxifene Hcl16suppressed
AllopurinolAllopurinol15suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen15suppressed
Clobetasol PropionateClobetasol Propionate14suppressed
Fluticasone PropionateFluticasone Propionate14suppressed
Potassium ChloridePotassium Chloride14suppressed
Tizanidine HclTizanidine Hcl14suppressed
Verapamil ErVerapamil Hcl14suppressed
CholestyramineCholestyramine (With Sugar)13suppressed
Eletriptan HbrEletriptan Hydrobromide13suppressed
JardianceEmpagliflozin13suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1312
Olmesartan MedoxomilOlmesartan Medoxomil13suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
ChlorthalidoneChlorthalidone12suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine12suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol12suppressed
Indomethacin ErIndomethacin12suppressed
Ipratropium BromideIpratropium Bromide12suppressed
Nebivolol HclNebivolol Hcl12suppressed
RizatriptanRizatriptan Benzoate12suppressed
SucralfateSucralfate12suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter12suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid12suppressed
Advair HfaFluticasone Propion/Salmeterol11suppressed
Dicyclomine HclDicyclomine Hcl11suppressed
FinasterideFinasteride11suppressed
Incruse ElliptaUmeclidinium Bromide11suppressed
Metoclopramide HclMetoclopramide Hcl11suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl11suppressed
Sildenafil CitrateSildenafil Citrate11suppressed

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