Healthcare provider profile · identity verified

Leo C Tynan, MD

Internal Medicine · FREDERICKSBURG, TX · NPI 1811937303

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
Levothyroxine SodiumLevothyroxine Sodium21144
Atorvastatin CalciumAtorvastatin Calcium16139
Amlodipine BesylateAmlodipine Besylate15942
Pantoprazole SodiumPantoprazole Sodium14241
Rosuvastatin CalciumRosuvastatin Calcium14242
AlprazolamAlprazolam13723
GabapentinGabapentin12527
Losartan PotassiumLosartan Potassium11227
Sertraline HclSertraline Hcl9514
SimvastatinSimvastatin9222
TelmisartanTelmisartan8220
FurosemideFurosemide7217
Metoprolol SuccinateMetoprolol Succinate7216
Escitalopram OxalateEscitalopram Oxalate6915
Montelukast SodiumMontelukast Sodium6817
Potassium ChloridePotassium Chloride6317
AllopurinolAllopurinol6114
Nebivolol HclNebivolol Hcl60suppressed
Tramadol HclTramadol Hcl5815
OzempicSemaglutide56suppressed
Trazodone HclTrazodone Hcl56suppressed
EliquisApixaban55suppressed
LorazepamLorazepam5513
Metformin HclMetformin Hcl5314
EzetimibeEzetimibe5013
Tamsulosin HclTamsulosin Hcl5014
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav4937
HydrochlorothiazideHydrochlorothiazide4816
Fluticasone PropionateFluticasone Propionate4616
SpironolactoneSpironolactone4412
CarvedilolCarvedilol4011
PregabalinPregabalin40suppressed
Zolpidem TartrateZolpidem Tartrate3713
PrednisonePrednisone3612
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3413
ValsartanValsartan33suppressed
Tramadol Hcl-AcetaminophenTramadol Hcl/Acetaminophen32suppressed
ClopidogrelClopidogrel Bisulfate31suppressed
DiazepamDiazepam30suppressed
LisinoprilLisinopril29suppressed
MethylprednisoloneMethylprednisolone2925
SynthroidLevothyroxine Sodium29suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2817
Alendronate SodiumAlendronate Sodium28suppressed
XareltoRivaroxaban28suppressed
PaxlovidNirmatrelvir/Ritonavir2724
Duloxetine HclDuloxetine Hcl26suppressed
OmeprazoleOmeprazole26suppressed
Quetiapine FumarateQuetiapine Fumarate26suppressed
ClonazepamClonazepam25suppressed
MeloxicamMeloxicam25suppressed
Repatha SureclickEvolocumab22suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide22suppressed
AzithromycinAzithromycin2119
EstradiolEstradiol21suppressed
JardianceEmpagliflozin21suppressed
TemazepamTemazepam21suppressed
ZaleplonZaleplon21suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen20suppressed
MethocarbamolMethocarbamol20suppressed
MyrbetriqMirabegron20suppressed
RamiprilRamipril20suppressed
Azelastine HclAzelastine Hcl1912
FamotidineFamotidine19suppressed
Memantine HclMemantine Hcl19suppressed
TrulicityDulaglutide18suppressed
Carbidopa-LevodopaCarbidopa/Levodopa17suppressed
AtenololAtenolol16suppressed
Ciprofloxacin HclCiprofloxacin Hcl1613
Diltiazem 24hr Er (Cd)Diltiazem Hcl16suppressed
IrbesartanIrbesartan16suppressed
LevetiracetamLevetiracetam15suppressed
MounjaroTirzepatide15suppressed
PremarinEstrogens, Conjugated15suppressed
Breo ElliptaFluticasone/Vilanterol14suppressed
PrimidonePrimidone14suppressed
AcyclovirAcyclovir13suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
LactuloseLactulose13suppressed
CelecoxibCelecoxib12suppressed
Clorazepate DipotassiumClorazepate Dipotassium12suppressed
Diclofenac SodiumDiclofenac Sodium12suppressed
LamotrigineLamotrigine12suppressed
MisoprostolMisoprostol12suppressed
Oxybutynin ChlorideOxybutynin Chloride12suppressed
Tolterodine Tartrate ErTolterodine Tartrate12suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
Cefpodoxime ProxetilCefpodoxime Proxetil11suppressed
Hydroxyzine HclHydroxyzine Hcl11suppressed
Ipratropium BromideIpratropium Bromide11suppressed
LumiganBimatoprost11suppressed
Ondansetron OdtOndansetron11suppressed
Propranolol HclPropranolol Hcl11suppressed
ValacyclovirValacyclovir Hcl11suppressed
Vitamin D2Ergocalciferol (Vitamin D2)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