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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General Payments · PY2019 · Entire year

$4,075.73

215 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

PY2019 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $4,063.96 213
Education $11.77 2

By paying entity

PY2019 · entire year · sorted by reported total

Payment records · PY2019

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

General Payments · PY2019 · Physicians and non-physician practitioners · CMS publication 2026-06-30

215 matching records · $4,075.73 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 215 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 215.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $15.5012/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026625141497 CMS
Kowa Pharmaceuticals America, Inc. $19.6112/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026630284169 CMS
Novartis Pharmaceuticals Corporation $24.8812/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817845 CMS
Novartis Pharmaceuticals Corporation $11.7612/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817841 CMS
Actelion Pharmaceuticals US, Inc. $19.0512/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659758167 CMS
Amgen Inc. $17.8712/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026663230703 CMS
Medtronic Vascular, Inc. $135.2712/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026677077787 CMS
Novartis Pharmaceuticals Corporation $18.6812/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817843 CMS
Amgen Inc. $23.3412/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026663230701 CMS
PFIZER INC. $15.4911/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673647527 CMS
Amgen Inc. $20.4911/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310761 CMS
Medtronic Vascular, Inc. $62.1911/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026677077771 CMS
PFIZER INC. $0.4511/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673676731 CMS
PFIZER INC. $10.8511/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673660973 CMS
Actelion Pharmaceuticals US, Inc. $19.2711/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659758165 CMS
Amgen Inc. $19.2011/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310759 CMS
PFIZER INC. $0.7311/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673692609 CMS
Amgen Inc. $14.6311/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310757 CMS
Janssen Pharmaceuticals, Inc $4.7611/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026658956583 CMS
PFIZER INC. $1.7911/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673650997 CMS
HeartFlow, Inc. $19.7511/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026708338673 CMS
Amgen Inc. $23.3511/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026663230699 CMS
Novartis Pharmaceuticals Corporation $19.7411/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817839 CMS
SANOFI-AVENTIS U.S. LLC $7.0011/06/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694178945 CMS
Novartis Pharmaceuticals Corporation $12.3411/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817835 CMS
Amgen Inc. $22.2311/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026663230695 CMS
Actelion Pharmaceuticals US, Inc. $9.5810/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659758157 CMS
Janssen Pharmaceuticals, Inc $9.6510/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026658956579 CMS
PFIZER INC. $0.3410/30/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673215301 CMS
AstraZeneca Pharmaceuticals LP $17.7110/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685112087 CMS
PFIZER INC. $1.0910/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673222321 CMS
Amgen Inc. $17.0410/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026663230693 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $22.0310/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026700281931 CMS
E.R. Squibb & Sons, L.L.C. $1.9510/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651325683 CMS
E.R. Squibb & Sons, L.L.C. $10.8410/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651325685 CMS
E.R. Squibb & Sons, L.L.C. $1.3410/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651325687 CMS
SANOFI-AVENTIS U.S. LLC $18.6210/24/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694196547 CMS
PFIZER INC. $1.6310/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673206243 CMS
Novartis Pharmaceuticals Corporation $15.4410/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817833 CMS
Kowa Pharmaceuticals America, Inc. $15.1510/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026630284167 CMS
Actelion Pharmaceuticals US, Inc. $10.0010/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659758155 CMS
Novartis Pharmaceuticals Corporation $19.7210/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817837 CMS
Medtronic Vascular, Inc. $84.1210/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026677034717 CMS
Actelion Pharmaceuticals US, Inc. $19.6810/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659758147 CMS
SANOFI-AVENTIS U.S. LLC $19.0210/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694207711 CMS
Abbott Laboratories $132.7010/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026664554027 CMS
Novartis Pharmaceuticals Corporation $8.7810/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817831 CMS
PFIZER INC. $13.9210/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673214699 CMS
PORTOLA PHARMACEUTICALS, INC. $23.3810/01/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705254757 CMS
Novartis Pharmaceuticals Corporation $18.6109/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659817827 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.