Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

BRIAN JOHN LEBERTHON

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1326023979
CMS profile
241091
Location
WEST COVINA, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2020 · Entire year

$3,717.37

181 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2020 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $3,509.02 178
Education $208.35 3

By paying entity

PY2020 · entire year · sorted by reported total

Payment records · PY2020

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2020 · Physicians and non-physician practitioners · CMS publication 2026-06-30

181 matching records · $3,717.37 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 181 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 181.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Celgene Corporation $21.7412/23/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874481 CMS
E.R. Squibb & Sons, L.L.C. $15.4712/22/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874461 CMS
GENZYME CORPORATION $20.4212/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026744143451 CMS
Puma Biotechnology, Inc. $25.6912/15/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026750539497 CMS
Karyopharm Therapeutics Inc. $27.3412/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026751739631 CMS
Celgene Corporation $21.7412/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874477 CMS
Amgen Inc. $24.6012/09/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026740940983 CMS
EMD Serono, Inc. $20.5512/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026751297407 CMS
EMD Serono, Inc. $20.5512/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026840415881 CMS
Alexion Pharmaceuticals, Inc. $24.9812/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726640151 CMS
Lilly USA, LLC $11.5512/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026728356729 CMS
Merck Sharp & Dohme Corporation $20.4212/03/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026747825521 CMS
Incyte Corporation $16.2012/02/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026745806729 CMS
Bayer HealthCare Pharmaceuticals Inc. $23.9611/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026713648591 CMS
Immunomedics, Inc. $11.3711/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026750658133 CMS
GENZYME CORPORATION $20.5511/23/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026744143443 CMS
Alexion Pharmaceuticals, Inc. $12.9211/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726640171 CMS
AstraZeneca Pharmaceuticals LP $23.9711/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026736233561 CMS
Puma Biotechnology, Inc. $27.2211/18/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026750539895 CMS
Celgene Corporation $23.9811/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874471 CMS
Alexion Pharmaceuticals, Inc. $24.9811/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726640147 CMS
Novartis Pharmaceuticals Corporation $16.8911/12/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026725988929 CMS
Merck Sharp & Dohme Corporation $20.2811/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026747817405 CMS
Merck Sharp & Dohme Corporation $14.9611/09/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026747806795 CMS
Bayer HealthCare Pharmaceuticals Inc. $4.6911/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026713643205 CMS
Bayer HealthCare Pharmaceuticals Inc. $1.0311/06/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026713646117 CMS
GlaxoSmithKline, LLC. $20.9411/05/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026738506215 CMS
Puma Biotechnology, Inc. $74.6111/05/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026750539887 CMS
E.R. Squibb & Sons, L.L.C. $19.3611/03/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874455 CMS
Regeneron Healthcare Solutions, Inc. $17.2711/02/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026724433839 CMS
GENZYME CORPORATION $21.5310/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026744143437 CMS
Alexion Pharmaceuticals, Inc. $22.0410/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726640157 CMS
Incyte Corporation $17.6810/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026745806713 CMS
Celgene Corporation $22.9810/26/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874465 CMS
Secura Bio, Inc. $14.6010/26/2020 Food and Beverage No dispute reported Delay: No
Change: CHANGED
06/30/2026733546583 CMS
Secura Bio, Inc. $1.1510/26/2020 Food and Beverage No dispute reported Delay: No
Change: CHANGED
06/30/2026733546587 CMS
Eisai Inc. $17.3910/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026751236891 CMS
Exelixis Inc. $14.3710/22/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026737177533 CMS
Celgene Corporation $24.0810/21/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874469 CMS
Alexion Pharmaceuticals, Inc. $24.9810/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726640153 CMS
AstraZeneca Pharmaceuticals LP $24.0810/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026736354737 CMS
Celgene Corporation $23.9810/15/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727874445 CMS
Amgen Inc. $13.2710/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026740940979 CMS
Pharmacyclics LLC, An AbbVie Company $29.1910/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026725673545 CMS
Bayer HealthCare Pharmaceuticals Inc. $14.2610/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026713635203 CMS
Bayer HealthCare Pharmaceuticals Inc. $21.5610/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026713650941 CMS
Novartis Pharmaceuticals Corporation $15.0210/12/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026725988927 CMS
Agios Pharmaceuticals, Inc. $14.7010/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026751970749 CMS
GlaxoSmithKline, LLC. $15.4810/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026738715509 CMS
Incyte Corporation $11.1010/05/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026745806709 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $4,277.41 229
PY2020 $3,717.37 181
PY2021 $4,875.82 247
PY2022 $5,705.56 251
PY2023 $6,220.50 251
PY2024 $6,010.66 235
PY2025 $6,217.64 261

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.

Cite this record.

Plain
BRIAN JOHN LEBERTHON, NPI 1326023979. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1326023979.
APA 7
IndustryPayments. (2026). BRIAN JOHN LEBERTHON, NPI 1326023979 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1326023979
Bluebook
BRIAN JOHN LEBERTHON, NPI 1326023979, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1326023979.

Source: Centers for Medicare & Medicaid Services, Open Payments.