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 · PY2021 · Entire year

$1,901.87

115 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

PY2021 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,885.97 113
Education $15.90 2

By paying entity

PY2021 · entire year · sorted by reported total

Payment records · PY2021

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

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

115 matching records · $1,901.87 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 115 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 115.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Cardiovascular Systems Inc. $15.6312/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026852951989 CMS
Janssen Pharmaceuticals, Inc $14.3912/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037391 CMS
Chiesi USA, Inc. $18.6112/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849054485 CMS
Novartis Pharmaceuticals Corporation $24.7712/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047093 CMS
Cardiovascular Systems Inc. $27.0012/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026852951947 CMS
AstraZeneca Pharmaceuticals LP $13.6212/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829780699 CMS
Merck Sharp & Dohme Corporation $17.0312/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848509621 CMS
Novartis Pharmaceuticals Corporation $12.4612/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047089 CMS
Chiesi USA, Inc. $14.3512/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849054899 CMS
Bardy Diagnostics, Inc. $13.7711/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026854979329 CMS
Bardy Diagnostics, Inc. $11.8011/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026854979333 CMS
Janssen Pharmaceuticals, Inc $12.9811/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037411 CMS
Novartis Pharmaceuticals Corporation $20.4811/23/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047085 CMS
Chiesi USA, Inc. $16.6511/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849044263 CMS
PFIZER INC. $18.6611/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833243405 CMS
SANOFI-AVENTIS U.S. LLC $18.8311/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843464127 CMS
Novartis Pharmaceuticals Corporation $24.5211/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047081 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $30.6411/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763582818 CMS
E.R. Squibb & Sons, L.L.C. $15.8511/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026783514393 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $14.2911/04/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026768822602 CMS
Novartis Pharmaceuticals Corporation $20.0811/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047077 CMS
Amgen Inc. $13.3311/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026825279133 CMS
Kowa Pharmaceuticals America, Inc. $15.9111/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026805524279 CMS
Chiesi USA, Inc. $19.6110/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849053067 CMS
PFIZER INC. $0.8810/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833242971 CMS
PFIZER INC. $3.5510/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833242967 CMS
PFIZER INC. $12.6310/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833242975 CMS
Janssen Pharmaceuticals, Inc $12.2410/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037405 CMS
PFIZER INC. $0.6110/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833243559 CMS
Amgen Inc. $10.5710/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026825279129 CMS
SANOFI-AVENTIS U.S. LLC $16.2410/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843464117 CMS
E.R. Squibb & Sons, L.L.C. $15.8110/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026783514391 CMS
PFIZER INC. $0.5510/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833243105 CMS
PFIZER INC. $15.6610/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833243293 CMS
Novartis Pharmaceuticals Corporation $17.6910/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047073 CMS
Actelion Pharmaceuticals US, Inc. $19.6810/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037417 CMS
Kowa Pharmaceuticals America, Inc. $14.5409/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026805524273 CMS
Chiesi USA, Inc. $18.2109/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849046693 CMS
PFIZER INC. $27.8509/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833243456 CMS
E.R. Squibb & Sons, L.L.C. $15.1709/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026783514381 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $27.6409/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763582820 CMS
AstraZeneca Pharmaceuticals LP $15.3209/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829572583 CMS
Janssen Pharmaceuticals, Inc $10.2009/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037393 CMS
Bayer HealthCare Pharmaceuticals Inc. $23.9209/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026789121437 CMS
Novartis Pharmaceuticals Corporation $12.9008/31/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047069 CMS
AstraZeneca Pharmaceuticals LP $13.1508/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829279791 CMS
Amgen Inc. $13.7108/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026825279125 CMS
Cardiovascular Systems Inc. $24.2008/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026852942573 CMS
Novartis Pharmaceuticals Corporation $18.2908/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026813047065 CMS
Actelion Pharmaceuticals US, Inc. $18.5608/23/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026788037419 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.