Healthcare provider profile · identity verified

Erdem Aktunc, MD

Hospitalist · SAN ANTONIO, TX · NPI 1306004114

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
EliquisApixaban17532
Levothyroxine SodiumLevothyroxine Sodium16934
Atorvastatin CalciumAtorvastatin Calcium14447
GabapentinGabapentin13035
Pantoprazole SodiumPantoprazole Sodium10633
Escitalopram OxalateEscitalopram Oxalate10525
Metformin HclMetformin Hcl8417
FurosemideFurosemide8126
Amlodipine BesylateAmlodipine Besylate7024
Tramadol HclTramadol Hcl6821
Divalproex SodiumDivalproex Sodium6415
Metoprolol TartrateMetoprolol Tartrate6123
Sertraline HclSertraline Hcl5917
Losartan PotassiumLosartan Potassium5817
Ondansetron HclOndansetron Hcl5419
Tamsulosin HclTamsulosin Hcl5417
LevetiracetamLevetiracetam52suppressed
Trazodone HclTrazodone Hcl5118
Memantine HclMemantine Hcl4814
XareltoRivaroxaban48suppressed
Donepezil HclDonepezil Hcl4712
Duloxetine HclDuloxetine Hcl44suppressed
Fluticasone PropionateFluticasone Propionate4419
ClopidogrelClopidogrel Bisulfate4320
Lantus SolostarInsulin Glargine,hum.Rec.Anlog42suppressed
CarvedilolCarvedilol4118
Rosuvastatin CalciumRosuvastatin Calcium41suppressed
MirtazapineMirtazapine38suppressed
BaclofenBaclofen3713
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate3721
Potassium ChloridePotassium Chloride3717
CefdinirCefdinir3633
FenofibrateFenofibrate Nanocrystallized33suppressed
Tizanidine HclTizanidine Hcl33suppressed
Buspirone HclBuspirone Hcl32suppressed
LamotrigineLamotrigine32suppressed
MyrbetriqMirabegron32suppressed
Metoprolol SuccinateMetoprolol Succinate3119
OmeprazoleOmeprazole31suppressed
LevofloxacinLevofloxacin3018
Sodium Chloride0.9 % Sodium Chloride3020
Warfarin SodiumWarfarin Sodium29suppressed
Montelukast SodiumMontelukast Sodium27suppressed
PregabalinPregabalin27suppressed
Amiodarone HclAmiodarone Hcl26suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2614
GemtesaVibegron25suppressed
Quetiapine FumarateQuetiapine Fumarate2514
MethocarbamolMethocarbamol2417
LisinoprilLisinopril2313
Nifedipine ErNifedipine23suppressed
Amitriptyline HclAmitriptyline Hcl22suppressed
Fluoxetine HclFluoxetine Hcl22suppressed
PrednisonePrednisone2214
Acetaminophen-CodeineAcetaminophen With Codeine20suppressed
FamotidineFamotidine20suppressed
Hydralazine HclHydralazine Hcl20suppressed
Ciprofloxacin HclCiprofloxacin Hcl1914
Pravastatin SodiumPravastatin Sodium19suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog18suppressed
LactuloseLactulose18suppressed
TrulicityDulaglutide18suppressed
Albuterol Sulfate HfaAlbuterol Sulfate17suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl17suppressed
Doxycycline HyclateDoxycycline Hyclate1712
RivastigmineRivastigmine Tartrate17suppressed
SimvastatinSimvastatin17suppressed
SpironolactoneSpironolactone17suppressed
TorsemideTorsemide17suppressed
Memantine Hcl ErMemantine Hcl16suppressed
Midodrine HclMidodrine Hcl16suppressed
RivastigmineRivastigmine16suppressed
Tolterodine TartrateTolterodine Tartrate16suppressed
ValsartanValsartan16suppressed
Vitamin D2Ergocalciferol (Vitamin D2)16suppressed
Alendronate SodiumAlendronate Sodium15suppressed
AzithromycinAzithromycin1513
BudesonideBudesonide15suppressed
ColchicineColchicine15suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1414
Dicyclomine HclDicyclomine Hcl14suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen1412
Insulin Glargine-YfgnInsulin Glargine-Yfgn14suppressed
LatanoprostLatanoprost14suppressed
ClonazepamClonazepam13suppressed
FinasterideFinasteride13suppressed
Metoclopramide HclMetoclopramide Hcl13suppressed
Nebivolol HclNebivolol Hcl13suppressed
FluconazoleFluconazole12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro12suppressed
AripiprazoleAripiprazole11suppressed
OzempicSemaglutide11suppressed

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