Healthcare provider profile · identity verified

John V. Heymach, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Medical Oncology · HOUSTON, TX · NPI 1417056565

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 John V. Heymach, M.D. received $125,712.41 in general payments during 2025 across 77 reported records.

Boehringer Ingelheim Pharmaceuticals, Inc. accounted for 17.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 13 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Tagrisso.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TAGRISSO as an associated drug or biological on 5285 records involving 2776 distinct recipient NPIs. Public Medicare Part D data also shows 73 claims for Tagrisso by this doctor in 2024.

AstraZeneca UK Limited reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TAGRISSO as an associated drug or biological on 36 records involving 32 distinct recipient NPIs. Public Medicare Part D data also shows 73 claims for Tagrisso by this doctor in 2024.

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

Payment overview · 2025

General Payments

$125,712.41

77 reported records · 18 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 $21,956.9217.5%42025
BioNTech SE Unresolved — no canonical attribution shown $21,485.5617.1%82025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $19,705.1715.7%72025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $16,537.5313.2%52025
Regeneron Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $12,592.2110.0%142025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $9,214.827.3%112025
Eli Lilly and Company Unresolved — no canonical attribution shown $8,100.006.4%22025
AstraZeneca UK Limited Unresolved — no canonical attribution shown $3,584.872.9%52025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $3,463.122.8%52025
PFIZER INC. Unresolved — no canonical attribution shown $2,520.002.0%22025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $2,302.111.8%42025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $2,100.001.7%12025
Boehringer Ingelheim International GmbH Unresolved — no canonical attribution shown $1,110.000.9%12025
ABBVIE INC. Unresolved — no canonical attribution shown $651.640.5%42025
Genentech USA, Inc. Unresolved — no canonical attribution shown $150.610.1%12025
Rigel Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $119.700.1%12025
Genentech, Inc. Unresolved — no canonical attribution shown $100.000.1%12025
Amgen Inc. Unresolved — no canonical attribution shown $18.150.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$83,569.0023
Travel and Lodging$29,230.3916
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$9,180.003
Food and Beverage$2,437.0632
Education$1,295.963

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
LIBTAYO
Normalized: libtayo
Biological Regeneron Pharmaceuticals, Inc. $12,592.21 14 2025
Source payment records
ZIIHERA
Normalized: ziihera
Drug JAZZ PHARMACEUTICALS INC. $4,843.02 2 2025
Source payment records
RYBREVANT
Normalized: rybrevant
Drug Janssen Biotech, Inc. $3,463.12 5 2025
Source payment records
TAGRISSO
Normalized: tagrisso
Drug AstraZeneca Pharmaceuticals LP $3,416.34 4 2025
Source payment records
LORBRENA
Normalized: lorbrena
Drug PFIZER INC. $2,520.00 2 2025
Source payment records
ENHERTU
Normalized: enhertu
Biological AstraZeneca Pharmaceuticals LP $2,371.34 3 2025
Source payment records
IMFINZI
Normalized: imfinzi
Biological AstraZeneca Pharmaceuticals LP, AstraZeneca UK Limited $1,937.22 2 2025
Source payment records
Tecentriq
Normalized: tecentriq
Biological Genentech USA, Inc. $150.61 1 2025
Source payment records
ZEPZELCA
Normalized: zepzelca
Drug JAZZ PHARMACEUTICALS INC. $123.42 1 2025
Source payment records
Gavreto
Normalized: gavreto
Drug Rigel Pharmaceuticals, Inc. $119.70 1 2025
Source payment records
Rezlidhia
Normalized: rezlidhia
Drug Rigel Pharmaceuticals, Inc. $119.70 1 2025
Source payment records
TAVALISSE
Normalized: tavalisse
Drug Rigel Pharmaceuticals, Inc. $119.70 1 2025
Source payment records
LUMAKRAS
Normalized: lumakras
Drug Amgen Inc. $18.15 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
TAGRISSO
tagrisso
2025 Tagrisso 2024 73
Beneficiary count suppressed
exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 TAGRISSO
open payments reported associated product
CMS Open Payments — General Payments
5285 supporting records · 2776 recipient NPIs · example record 1206131546
Tagrisso · 2024
Exact normalized brand match · 1 Part D row
73 suppressed by CMS
AstraZeneca UK Limited
Exact reporting entity; no affiliate inference
2025 TAGRISSO
open payments reported associated product
CMS Open Payments — General Payments
36 supporting records · 32 recipient NPIs · example record 1202917075
Tagrisso · 2024
Exact normalized brand match · 1 Part D row
73 suppressed by CMS

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
TagrissoOsimertinib Mesylate73suppressed
Oxycodone HclOxycodone Hcl14suppressed

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 $125,712.41 · 77 records Boehringer Ingelheim Pharmaceuticals, Inc. ENHERTU, Gavreto, IMFINZI, LIBTAYO, LORBRENA, LUMAKRAS, RYBREVANT, Rezlidhia, TAGRISSO, TAVALISSE, Tecentriq, ZEPZELCA, ZIIHERA 2
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