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 · PY2024 · Entire year

$3,043.29

116 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

PY2024 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $3,021.59 114
Education $21.70 2

By paying entity

PY2024 · entire year · sorted by reported total

Payment records · PY2024

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

General Payments · PY2024 · Physicians and non-physician practitioners · CMS publication 2026-06-30

116 matching records · $3,043.29 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 116 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 116.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Actelion Pharmaceuticals US, Inc. $34.7712/23/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261078870856 CMS
United Therapeutics Corporation $21.0512/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261149459814 CMS
Alnylam Pharmaceuticals Inc. $27.2012/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261125845964 CMS
Abbott Laboratories $6.1512/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923810 CMS
Abbott Laboratories $96.7112/13/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923806 CMS
Merck Sharp & Dohme LLC $13.3112/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649641 CMS
Novartis Pharmaceuticals Corporation $25.1612/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079434 CMS
Merck Sharp & Dohme LLC $32.9812/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141851643 CMS
CARDIVA MEDICAL, INC. $25.4911/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261143858031 CMS
SCPHARMACEUTICALS INC. $20.3411/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261132314547 CMS
Merck Sharp & Dohme LLC $126.8611/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649627 CMS
E.R. Squibb & Sons, L.L.C. $21.0711/14/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101619151 CMS
Impulse Dynamics (USA) Inc. $168.2911/13/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261100422776 CMS
Novartis Pharmaceuticals Corporation $11.2211/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079432 CMS
Alnylam Pharmaceuticals Inc. $22.9711/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261125845938 CMS
Abbott Laboratories $7.3211/04/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923802 CMS
Merck Sharp & Dohme LLC $30.1311/04/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649735 CMS
Novartis Pharmaceuticals Corporation $24.3910/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079430 CMS
Acist Medical Systems, Inc. $27.9710/28/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261123313156 CMS
Amgen Inc. $13.2810/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261117617594 CMS
E.R. Squibb & Sons, L.L.C. $20.6810/22/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101619132 CMS
AstraZeneca Pharmaceuticals LP $17.1110/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261105819025 CMS
Actelion Pharmaceuticals US, Inc. $17.4810/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261078870880 CMS
Novartis Pharmaceuticals Corporation $8.0110/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079428 CMS
Abbott Laboratories $17.4310/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923799 CMS
Merck Sharp & Dohme LLC $24.9810/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649633 CMS
Novartis Pharmaceuticals Corporation $12.9910/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079424 CMS
Kiniksa Pharmaceuticals International, plc $18.2309/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261154888171 CMS
SCPHARMACEUTICALS INC. $21.9409/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261132300775 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $15.7309/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261117934493 CMS
Amgen Inc. $22.7609/23/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261111640790 CMS
Regeneron Healthcare Solutions, Inc. $25.4509/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261114105905 CMS
E.R. Squibb & Sons, L.L.C. $17.8809/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101619108 CMS
PFIZER INC. $26.8309/11/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261131929098 CMS
Alnylam Pharmaceuticals Inc. $26.8209/10/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261125845914 CMS
Merck Sharp & Dohme LLC $10.8509/09/2024 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649515 CMS
Merck Sharp & Dohme LLC $21.4809/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649629 CMS
Abbott Laboratories $13.3509/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923795 CMS
Novartis Pharmaceuticals Corporation $2.5909/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079420 CMS
Novartis Pharmaceuticals Corporation $1.3509/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079422 CMS
ABIOMED $138.0108/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261142225169 CMS
Novartis Pharmaceuticals Corporation $1.7608/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079418 CMS
United Therapeutics Corporation $19.0508/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261149456092 CMS
Merck Sharp & Dohme LLC $29.0208/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261141649631 CMS
ABIOMED $91.4608/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261142225167 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $19.5408/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261117934499 CMS
E.R. Squibb & Sons, L.L.C. $17.9808/08/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101619100 CMS
Esperion Therapeutics, Inc. $25.1408/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261129445244 CMS
Novartis Pharmaceuticals Corporation $7.9508/01/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261087079416 CMS
Abbott Laboratories $77.1307/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261124923814 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.