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 · PY2023 · Entire year

$6,220.50

251 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

PY2023 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $5,968.85 248
Long term medical supply or device loan $166.66 2
Education $84.99 1

By paying entity

PY2023 · entire year · sorted by reported total

Paying entityAmountRecords
AstraZeneca Pharmaceuticals LP $794.66 21
Incyte Corporation $495.02 15
NOVARTIS PHARMACEUTICALS CORPORATION $479.88 19
E.R. Squibb & Sons, L.L.C. $321.38 20
Foundation Medicine, Inc. $297.49 8
Karyopharm Therapeutics Inc. $297.32 9
Gilead Sciences, Inc. $287.47 15
GENZYME CORPORATION $283.61 11
Daiichi Sankyo Inc. $242.19 14
PFIZER INC. $237.99 12
Amgen Inc. $220.10 11
Puma Biotechnology, Inc. $195.33 7
Seagen Inc. $194.81 4
Takeda Pharmaceuticals U.S.A., Inc. $166.92 7
Celgene Corporation $165.93 8
Merck Sharp & Dohme LLC $142.38 7
Genentech USA, Inc. $137.19 9
Pharmacyclics LLC, An AbbVie Company $130.50 4
Immunocore Limited $97.31 1
Mirati Therapeutics, Inc. $83.89 4
Dendreon Pharmaceuticals LLC $71.30 3
Acrotech Biopharma Inc. $68.11 3
Sumitomo Pharma America, Inc. $62.43 4
ABBVIE INC. $56.06 3
TAIHO ONCOLOGY, INC. $54.35 2
Alexion Pharmaceuticals, Inc. $52.57 3
ImmunoGen, Inc. $50.12 3
PharmaEssentia USA Corporation $48.36 2
Agios Pharmaceuticals, Inc. $47.16 2
Bayer Healthcare Pharmaceuticals Inc. $42.01 2
Rigel Pharmaceuticals, Inc. $30.03 1
Genmab U.S., Inc. $29.96 1
EMD Serono, Inc. $28.88 1
Janssen Biotech, Inc. $26.15 1
BeiGene USA, Inc. $25.95 1
GlaxoSmithKline, LLC. $24.05 1
ADC Therapeutics America, Inc. $23.64 1
Astellas Pharma US Inc $23.50 1
AVEO Pharmaceuticals, Inc. $22.18 1
ARRAY BIOPHARMA INC $21.59 1
Eisai Inc. $20.72 1
Novocure Inc. $19.47 1
Coherus Biosciences Inc. $18.61 1
Stemline Therapeutics Inc. $18.18 1
MorphoSys, US Inc. $17.81 1
Alnylam Pharmaceuticals Inc. $16.84 1
Lilly USA, LLC $15.90 1
Kite Pharma, Inc. $13.20 1

Page 1 of 6; records 1–50 of 251 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

BRIAN JOHN LEBERTHON

NPI 1326023979 · CMS profile ID 241091

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

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.

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.

General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 1 of 6; records 1–50 of 251 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1326023979?year=2023&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
BRIAN JOHN LEBERTHON, NPI 1326023979, CMS profile ID 241091. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 6; records 1–50 of 251 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1326023979?year=2023&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
APA 7
IndustryPayments. (2026). BRIAN JOHN LEBERTHON, NPI 1326023979, CMS profile ID 241091. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 6; records 1–50 of 251 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1326023979?year=2023&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
Bluebook
BRIAN JOHN LEBERTHON, NPI 1326023979, CMS profile ID 241091, IndustryPayments, General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 1 of 6; records 1–50 of 251 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9. https://industrypayments.org/provider/npi-1326023979?year=2023&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2023

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

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

251 matching records · $6,220.50 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 251 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 251.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
ABBVIE INC. $16.0812/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 997737961 CMS
Novartis Pharmaceuticals Corporation $4.3712/22/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1000088203 CMS
Novartis Pharmaceuticals Corporation $25.8112/22/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1000088209 CMS
Puma Biotechnology, Inc. $24.5512/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1059055213 CMS
Gilead Sciences, Inc. $7.0412/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1026098816 CMS
Daiichi Sankyo Inc. $29.6812/16/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1006576717 CMS
Merck Sharp & Dohme LLC $20.1512/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1048844499 CMS
GENZYME CORPORATION $31.6312/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1049804289 CMS
Alexion Pharmaceuticals, Inc. $21.9912/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1017022227 CMS
Daiichi Sankyo Inc. $17.9312/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1006576647 CMS
EMD Serono, Inc. $28.8812/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1032383975 CMS
Foundation Medicine, Inc. $76.0212/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1058784251 CMS
PFIZER INC. $20.8612/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1050612573 CMS
Amgen Inc. $14.9812/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1019840901 CMS
Dendreon Pharmaceuticals LLC $14.6912/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1062003341 CMS
Takeda Pharmaceuticals U.S.A., Inc. $27.6012/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1055448949 CMS
AstraZeneca Pharmaceuticals LP $29.1312/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015638667 CMS
Puma Biotechnology, Inc. $29.4812/04/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1059046341 CMS
E.R. Squibb & Sons, L.L.C. $19.1612/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015231891 CMS
AstraZeneca Pharmaceuticals LP $18.4411/30/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015997085 CMS
Daiichi Sankyo Inc. $6.2611/30/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1006552859 CMS
Novartis Pharmaceuticals Corporation $22.8411/29/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 992159967 CMS
Merck Sharp & Dohme LLC $22.0011/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1048844497 CMS
PFIZER INC. $5.2511/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1049453423 CMS
Gilead Sciences, Inc. $7.7411/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1026091363 CMS
Immunocore Limited $97.3111/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1051211061 CMS
AstraZeneca Pharmaceuticals LP $31.5611/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1011712301 CMS
Gilead Sciences, Inc. $26.8511/16/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1025593785 CMS
ARRAY BIOPHARMA INC $21.5911/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1050669427 CMS
GENZYME CORPORATION $26.1611/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1049804247 CMS
Acrotech Biopharma Inc. $24.6611/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1052991689 CMS
Novartis Pharmaceuticals Corporation $31.4211/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 992159963 CMS
E.R. Squibb & Sons, L.L.C. $19.7111/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015231857 CMS
Pharmacyclics LLC, An AbbVie Company $30.0411/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 998289507 CMS
Amgen Inc. $5.5011/03/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1020546135 CMS
Incyte Corporation $28.9911/02/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1044478273 CMS
PFIZER INC. $17.8811/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1050528527 CMS
AstraZeneca Pharmaceuticals LP $23.4810/31/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015618225 CMS
Celgene Corporation $31.6310/30/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1015231811 CMS
Daiichi Sankyo Inc. $27.7410/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1006520733 CMS
Puma Biotechnology, Inc. $26.3510/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1059062217 CMS
GENZYME CORPORATION $26.0510/24/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1049804241 CMS
Novartis Pharmaceuticals Corporation $21.5810/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 992159959 CMS
Bayer Healthcare Pharmaceuticals Inc. $16.3410/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1000504721 CMS
Incyte Corporation $24.7010/16/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1044478933 CMS
Foundation Medicine, Inc. $22.9710/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1058784245 CMS
AstraZeneca Pharmaceuticals LP $32.3410/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1011519167 CMS
Genentech USA, Inc. $2.3910/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1040317005 CMS
Genentech USA, Inc. $2.3910/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1040317009 CMS
Genentech USA, Inc. $17.9610/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1040317015 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.