Healthcare provider profile · identity verified

Frederic K. Passmann, MD

Emergency Medicine · ASPERMONT, TX · NPI 1538142617

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
EliquisApixaban29520
Levothyroxine SodiumLevothyroxine Sodium28431
Potassium ChloridePotassium Chloride24236
LisinoprilLisinopril19931
Pantoprazole SodiumPantoprazole Sodium19529
FurosemideFurosemide18834
Amlodipine BesylateAmlodipine Besylate18222
GabapentinGabapentin18125
Metoprolol TartrateMetoprolol Tartrate13218
OmeprazoleOmeprazole13016
LactuloseLactulose11026
MirtazapineMirtazapine10816
Metoprolol SuccinateMetoprolol Succinate10316
Atorvastatin CalciumAtorvastatin Calcium10218
Duloxetine HclDuloxetine Hcl9513
Donepezil HclDonepezil Hcl8814
Tramadol HclTramadol Hcl8022
ClopidogrelClopidogrel Bisulfate77suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7422
Metformin HclMetformin Hcl7413
Sertraline HclSertraline Hcl6813
Trazodone HclTrazodone Hcl6612
Montelukast SodiumMontelukast Sodium65suppressed
Fluoxetine HclFluoxetine Hcl64suppressed
Tamsulosin HclTamsulosin Hcl64suppressed
Carbidopa-LevodopaCarbidopa/Levodopa63suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim6041
LevetiracetamLevetiracetam55suppressed
Buspirone HclBuspirone Hcl5411
Escitalopram OxalateEscitalopram Oxalate53suppressed
FarxigaDapagliflozin Propanediol51suppressed
ClonidineClonidine49suppressed
Warfarin SodiumWarfarin Sodium48suppressed
EnuloseLactulose4519
SimvastatinSimvastatin45suppressed
SpironolactoneSpironolactone45suppressed
Rosuvastatin CalciumRosuvastatin Calcium42suppressed
CelecoxibCelecoxib41suppressed
Ropinirole HclRopinirole Hcl39suppressed
CarvedilolCarvedilol38suppressed
Losartan PotassiumLosartan Potassium38suppressed
Memantine HclMemantine Hcl38suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa37suppressed
DigoxinDigoxin37suppressed
LinzessLinaclotide37suppressed
LantusInsulin Glargine,hum.Rec.Anlog36suppressed
Oxybutynin Chloride ErOxybutynin Chloride36suppressed
AllopurinolAllopurinol35suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate35suppressed
Fluticasone PropionateFluticasone Propionate33suppressed
Quetiapine FumarateQuetiapine Fumarate32suppressed
HydrochlorothiazideHydrochlorothiazide31suppressed
Pravastatin SodiumPravastatin Sodium31suppressed
PrednisonePrednisone31suppressed
XareltoRivaroxaban31suppressed
Amiodarone HclAmiodarone Hcl30suppressed
Divalproex SodiumDivalproex Sodium30suppressed
ClonazepamClonazepam29suppressed
ConstuloseLactulose2912
FamotidineFamotidine29suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2816
Ciprofloxacin HclCiprofloxacin Hcl2822
MetolazoneMetolazone28suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst28suppressed
Alendronate SodiumAlendronate Sodium27suppressed
NitrofurantoinNitrofurantoin Macrocrystal27suppressed
Doxycycline HyclateDoxycycline Hyclate2621
EntrestoSacubitril/Valsartan26suppressed
Hydralazine HclHydralazine Hcl26suppressed
Propafenone HclPropafenone Hcl26suppressed
Acetaminophen-CodeineAcetaminophen With Codeine25suppressed
OlanzapineOlanzapine25suppressed
PrimidonePrimidone25suppressed
EzetimibeEzetimibe24suppressed
AlprazolamAlprazolam23suppressed
BudesonideBudesonide23suppressed
BumetanideBumetanide22suppressed
JanuviaSitagliptin Phosphate21suppressed
Novolin RInsulin Regular, Human19suppressed
Ondansetron HclOndansetron Hcl1912
Citalopram HbrCitalopram Hydrobromide18suppressed
FentanylFentanyl18suppressed
IrbesartanIrbesartan17suppressed
NuedextaDextromethorphan Hbr/Quinidine16suppressed
SulfasalazineSulfasalazine16suppressed
Amitriptyline HclAmitriptyline Hcl15suppressed
LorazepamLorazepam15suppressed
PregabalinPregabalin15suppressed
BrilintaTicagrelor14suppressed
Bethanechol ChlorideBethanechol Chloride13suppressed
CefdinirCefdinir1311
Isosorbide Mononitrate ErIsosorbide Mononitrate13suppressed
ValsartanValsartan13suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril12suppressed
AtenololAtenolol12suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
LovastatinLovastatin12suppressed
MounjaroTirzepatide12suppressed
Olmesartan MedoxomilOlmesartan Medoxomil12suppressed
Propranolol HclPropranolol Hcl12suppressed
Rasagiline MesylateRasagiline Mesylate12suppressed
Diltiazem 12hr ErDiltiazem Hcl11suppressed
EstradiolEstradiol11suppressed
Paroxetine HclParoxetine Hcl11suppressed
Valproic AcidValproic Acid (As Sodium Salt)11suppressed

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