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

DONALD J MAHON

Allopathic & Osteopathic Physicians Internal Medicine Cardiovascular Disease

NPI
1255335659
CMS profile
193309
Location
ORANGE, 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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Filter and download payment records

General Payments · PY2020 · Entire year

$771.50

47 records · 0 disputed

Summary and payment records

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

“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 $771.50 47

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

47 matching records · $771.50 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 47 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 1–47 of 47.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
E.R. Squibb & Sons, L.L.C. $20.5212/09/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727876463 CMS
Actelion Pharmaceuticals US, Inc. $5.9511/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117799 CMS
Amgen Inc. $16.3311/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741013095 CMS
Novartis Pharmaceuticals Corporation $19.1011/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001637 CMS
E.R. Squibb & Sons, L.L.C. $16.7910/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727876445 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $11.6810/30/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026723057915 CMS
Novartis Pharmaceuticals Corporation $5.4509/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001633 CMS
Amgen Inc. $22.6307/20/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741013093 CMS
Kowa Pharmaceuticals America, Inc. $14.8207/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026716734735 CMS
PFIZER INC. $18.1907/08/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026743251799 CMS
Actelion Pharmaceuticals US, Inc. $19.7307/06/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117789 CMS
AstraZeneca Pharmaceuticals LP $21.1206/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026736175723 CMS
Novartis Pharmaceuticals Corporation $1.5806/18/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001629 CMS
United Therapeutics Corporation $24.3206/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026752464053 CMS
Amgen Inc. $20.0005/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741013089 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $11.7805/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026723057913 CMS
Actelion Pharmaceuticals US, Inc. $19.6904/23/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117787 CMS
Lundbeck LLC $22.2003/14/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026747549129 CMS
Novartis Pharmaceuticals Corporation $18.3003/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001623 CMS
E.R. Squibb & Sons, L.L.C. $12.3203/10/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727876369 CMS
Amgen Inc. $12.9503/09/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741383947 CMS
Janssen Pharmaceuticals, Inc $14.4403/06/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117805 CMS
Regeneron Healthcare Solutions, Inc. $14.9903/04/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026724436605 CMS
Actelion Pharmaceuticals US, Inc. $19.3903/03/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117793 CMS
Kowa Pharmaceuticals America, Inc. $15.0803/02/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026716721965 CMS
Actelion Pharmaceuticals US, Inc. $23.0102/27/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117795 CMS
PFIZER INC. $17.8602/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026743121649 CMS
SANOFI-AVENTIS U.S. LLC $20.5702/21/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026744119977 CMS
Actelion Pharmaceuticals US, Inc. $16.3402/19/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117791 CMS
Janssen Pharmaceuticals, Inc $12.3002/15/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117801 CMS
Novartis Pharmaceuticals Corporation $9.4002/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001611 CMS
E.R. Squibb & Sons, L.L.C. $14.7402/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026727876355 CMS
HeartFlow, Inc. $19.7602/11/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026748369825 CMS
PFIZER INC. $14.5301/29/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026743312051 CMS
Arbor Pharmaceuticals, Inc. $25.5001/28/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026735749835 CMS
Amgen Inc. $16.8901/27/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741383945 CMS
Novartis Pharmaceuticals Corporation $20.2201/24/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001619 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $22.1701/23/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026723057911 CMS
SANOFI-AVENTIS U.S. LLC $17.5801/22/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026744119961 CMS
Novartis Pharmaceuticals Corporation $17.2601/17/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001615 CMS
Amarin Pharma Inc. $13.9601/16/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026739923415 CMS
Actelion Pharmaceuticals US, Inc. $18.6401/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117797 CMS
Amgen Inc. $10.7201/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741013083 CMS
Amgen Inc. $5.7101/13/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741013087 CMS
Janssen Pharmaceuticals, Inc $11.8801/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026719117803 CMS
Novartis Pharmaceuticals Corporation $22.6801/07/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026726001607 CMS
Amgen Inc. $20.4301/06/2020 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026741383943 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $4,075.73 215
PY2020 $771.50 47
PY2021 $1,901.87 115
PY2022 $3,461.43 121
PY2023 $2,060.17 96
PY2024 $3,043.29 116
PY2025 $3,946.53 113

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
DONALD J MAHON, NPI 1255335659. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1255335659.
APA 7
IndustryPayments. (2026). DONALD J MAHON, NPI 1255335659 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1255335659
Bluebook
DONALD J MAHON, NPI 1255335659, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1255335659.

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