Healthcare provider profile · identity verified

Mark Alan Heard, MD

Family Practice · CUERO, TX · NPI 1558339242

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
Donepezil HclDonepezil Hcl39428
Memantine HclMemantine Hcl24114
Atorvastatin CalciumAtorvastatin Calcium21030
GabapentinGabapentin19615
Levothyroxine SodiumLevothyroxine Sodium19428
Sertraline HclSertraline Hcl17415
Divalproex SodiumDivalproex Sodium17317
Duloxetine HclDuloxetine Hcl132suppressed
Escitalopram OxalateEscitalopram Oxalate125suppressed
LisinoprilLisinopril11616
LorazepamLorazepam11616
FurosemideFurosemide10811
ClopidogrelClopidogrel Bisulfate10711
OxcarbazepineOxcarbazepine104suppressed
Tamsulosin HclTamsulosin Hcl101suppressed
Amlodipine BesylateAmlodipine Besylate9714
Divalproex Sodium ErDivalproex Sodium95suppressed
Pantoprazole SodiumPantoprazole Sodium9113
Tramadol HclTramadol Hcl8816
Potassium ChloridePotassium Chloride85suppressed
ClozapineClozapine79suppressed
MirtazapineMirtazapine68suppressed
Quetiapine FumarateQuetiapine Fumarate67suppressed
Rosuvastatin CalciumRosuvastatin Calcium67suppressed
LevetiracetamLevetiracetam65suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6220
AllopurinolAllopurinol61suppressed
Alendronate SodiumAlendronate Sodium60suppressed
Metoprolol TartrateMetoprolol Tartrate59suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended59suppressed
Medroxyprogesterone AcetateMedroxyprogesterone Acetate58suppressed
Metformin HclMetformin Hcl56suppressed
JardianceEmpagliflozin52suppressed
Losartan PotassiumLosartan Potassium5013
DigoxinDigoxin49suppressed
Benztropine MesylateBenztropine Mesylate48suppressed
SimvastatinSimvastatin4813
LatanoprostLatanoprost44suppressed
TopiramateTopiramate44suppressed
Triamcinolone AcetonideTriamcinolone Acetonide41suppressed
CarvedilolCarvedilol38suppressed
EzetimibeEzetimibe38suppressed
Memantine Hcl ErMemantine Hcl38suppressed
Trazodone HclTrazodone Hcl38suppressed
Metoprolol SuccinateMetoprolol Succinate34suppressed
Buspirone HclBuspirone Hcl32suppressed
OlanzapineOlanzapine30suppressed
AtenololAtenolol29suppressed
FinasterideFinasteride29suppressed
Invega SustennaPaliperidone Palmitate29suppressed
JanuviaSitagliptin Phosphate28suppressed
Diltiazem 24hr ErDiltiazem Hcl26suppressed
Montelukast SodiumMontelukast Sodium26suppressed
RisperidoneRisperidone26suppressed
Fluoxetine HclFluoxetine Hcl25suppressed
Nitroglycerin PatchNitroglycerin24suppressed
Oxybutynin Chloride ErOxybutynin Chloride24suppressed
PrimidonePrimidone24suppressed
TrulicityDulaglutide23suppressed
VeltassaPatiromer Calcium Sorbitex23suppressed
FamotidineFamotidine22suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl21suppressed
Dicyclomine HclDicyclomine Hcl21suppressed
EntacaponeEntacapone21suppressed
Carbamazepine ErCarbamazepine19suppressed
LactuloseLactulose19suppressed
Olmesartan MedoxomilOlmesartan Medoxomil19suppressed
Metformin Hcl ErMetformin Hcl18suppressed
Nifedipine ErNifedipine18suppressed
LantusInsulin Glargine,hum.Rec.Anlog17suppressed
OmeprazoleOmeprazole17suppressed
Verapamil ErVerapamil Hcl17suppressed
ClonazepamClonazepam16suppressed
BaclofenBaclofen15suppressed
Ciprofloxacin HclCiprofloxacin Hcl15suppressed
Raloxifene HclRaloxifene Hcl15suppressed
Bupropion HclBupropion Hcl14suppressed
PhenytoinPhenytoin14suppressed
Zolpidem TartrateZolpidem Tartrate14suppressed
Doxepin HclDoxepin Hcl13suppressed
EliquisApixaban13suppressed
FenofibrateFenofibrate,micronized13suppressed
GlipizideGlipizide13suppressed
IvermectinIvermectin1312
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide13suppressed
NyliaNorethindrone-Ethin. Estradiol13suppressed
Paroxetine HclParoxetine Hcl13suppressed
PerserisRisperidone13suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl13suppressed
Carbidopa-LevodopaCarbidopa/Levodopa12suppressed
Chlorpromazine HclChlorpromazine Hcl12suppressed
PhenytekPhenytoin Sodium Extended12suppressed
Ranolazine ErRanolazine12suppressed
Spiriva RespimatTiotropium Bromide12suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog11suppressed
Fluticasone PropionateFluticasone Propionate11suppressed

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