Healthcare provider profile · identity verified

Lori J Wirth, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Medical Oncology · BOSTON, MA · NPI 1750344008

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 Lori J Wirth, MD received $49,202.42 in general payments during 2025 across 31 reported records.

LEO Pharma AS accounted for 34.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

Eisai Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Lenvima as an associated drug or biological on 16833 records involving 7014 distinct recipient NPIs. Public Medicare Part D data also shows 51 claims for Lenvima by this doctor in 2024.

Merck Sharp & Dohme LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LENVIMA as an associated drug or biological on 66 records involving 58 distinct recipient NPIs. Public Medicare Part D data also shows 51 claims for Lenvima by this doctor in 2024.

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

Payment overview · 2025

General Payments

$49,202.42

31 reported records · 7 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
LEO Pharma AS Unresolved — no canonical attribution shown $16,712.5134.0%72025
Novartis Pharma AG Unresolved — no canonical attribution shown $16,275.1133.1%42025
Eisai Inc. Unresolved — no canonical attribution shown $10,873.9022.1%72025
ABBVIE INC. Unresolved — no canonical attribution shown $2,750.005.6%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $2,240.004.5%12025
TAIHO ONCOLOGY, INC. Unresolved — no canonical attribution shown $183.120.4%52025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $167.780.3%62025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$32,965.008
Travel and Lodging$15,592.8611
Food and Beverage$393.009
Compensation for serving as faculty or as a speaker for a medical education program$208.312
Education$43.251

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
MEKINIST
Normalized: mekinist
Drug Novartis Pharma AG $16,275.11 4 2025
Source payment records
Lenvima
Normalized: lenvima
Drug Eisai Inc. $10,827.42 6 2025
Source payment records
ENHERTU
Normalized: enhertu
Biological AstraZeneca Pharmaceuticals LP $43.25 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
Lenvima
lenvima
2025 Lenvima 2024 51 exact normalized Medicare Part D
MEKINIST
mekinist
2025 Mekinist 2024 14
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
Eisai Inc.
Exact reporting entity; no affiliate inference
2025 Lenvima
open payments reported associated product
CMS Open Payments — General Payments
16833 supporting records · 7014 recipient NPIs · example record 1244455619
Lenvima · 2024
Exact normalized brand match · 1 Part D row
51 14
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 LENVIMA
open payments reported associated product
CMS Open Payments — General Payments
66 supporting records · 58 recipient NPIs · example record 1237995778
Lenvima · 2024
Exact normalized brand match · 1 Part D row
51 14

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
LenvimaLenvatinib Mesylate5114
Levothyroxine SodiumLevothyroxine Sodium3912
RetevmoSelpercatinib16suppressed
MekinistTrametinib Dimethyl Sulfoxide14suppressed
TafinlarDabrafenib Mesylate13suppressed
Amlodipine BesylateAmlodipine Besylate11suppressed

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 $49,202.42 · 31 records LEO Pharma AS ENHERTU, Lenvima, MEKINIST 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