Healthcare provider profile · identity verified

David Alan Diaz, M.D.

Allopathic & Osteopathic Physicians|Family Medicine · ROUND ROCK, TX · NPI 1033106380

Profile state: payments and partd 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

CMS Open Payments records show David Alan Diaz, M.D. received $172.37 in general payments during 2025 across 8 reported records.

Boehringer Ingelheim Pharmaceuticals, Inc. accounted for 35.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 7 associated products.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$172.37

8 reported records · 6 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $60.2435.0%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $38.2122.2%22025
Amgen Inc. Unresolved — no canonical attribution shown $23.7113.8%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $21.0512.2%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $14.728.5%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $14.448.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$172.378

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $60.24 2 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $38.21 2 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $23.71 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $21.05 1 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $14.72 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $14.44 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $14.44 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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 Calcium12641
HydrochlorothiazideHydrochlorothiazide12437
Rosuvastatin CalciumRosuvastatin Calcium11836
LisinoprilLisinopril11032
Levothyroxine SodiumLevothyroxine Sodium10730
Pravastatin SodiumPravastatin Sodium9328
Amlodipine BesylateAmlodipine Besylate8529
IrbesartanIrbesartan7622
Metformin Hcl ErMetformin Hcl6720
OmeprazoleOmeprazole6721
CarvedilolCarvedilol5216
Fluticasone PropionateFluticasone Propionate5120
Montelukast SodiumMontelukast Sodium4215
Losartan PotassiumLosartan Potassium4115
Escitalopram OxalateEscitalopram Oxalate3513
Irbesartan-HydrochlorothiazideIrbesartan/Hydrochlorothiazide3412
Tamsulosin HclTamsulosin Hcl3211
SimvastatinSimvastatin29suppressed
Pioglitazone HclPioglitazone Hcl28suppressed
Amitriptyline HclAmitriptyline Hcl2611
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide26suppressed
Alendronate SodiumAlendronate Sodium25suppressed
MeloxicamMeloxicam2515
AllopurinolAllopurinol24suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2422
FamotidineFamotidine2411
Fluoxetine HclFluoxetine Hcl23suppressed
GabapentinGabapentin21suppressed
Sertraline HclSertraline Hcl18suppressed
Albuterol Sulfate HfaAlbuterol Sulfate17suppressed
ValsartanValsartan17suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium16suppressed
EzetimibeEzetimibe16suppressed
MethylprednisoloneMethylprednisolone1614
Doxycycline HyclateDoxycycline Hyclate1514
Duloxetine HclDuloxetine Hcl15suppressed
Metformin HclMetformin Hcl15suppressed
Pantoprazole SodiumPantoprazole Sodium15suppressed
Zolpidem TartrateZolpidem Tartrate15suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide14suppressed
Bupropion XlBupropion Hcl13suppressed
Citalopram HbrCitalopram Hydrobromide13suppressed
GlimepirideGlimepiride13suppressed
Metoprolol SuccinateMetoprolol Succinate13suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide13suppressed
Potassium ChloridePotassium Chloride13suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid13suppressed
ValacyclovirValacyclovir Hcl13suppressed
Doxepin HclDoxepin Hcl11suppressed
Olmesartan MedoxomilOlmesartan Medoxomil11suppressed

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 $172.37 · 8 records Boehringer Ingelheim Pharmaceuticals, Inc. AIRSUPRA, Cologuard Collection Kit, JARDIANCE, MOUNJARO, Ozempic, REPATHA, ZEPBOUND
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