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

Page 4 of 5; records 151–200 of 215 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

DONALD J MAHON

NPI 1255335659 · CMS profile ID 193309

Allopathic & Osteopathic Physicians / Internal Medicine / Cardiovascular Disease

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.

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, PY2019; 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 4 of 5; records 151–200 of 215 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1255335659?year=2019&recipient=provider&page=4#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e

Cite these filtered records

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

Plain
DONALD J MAHON, NPI 1255335659, CMS profile ID 193309. General Payments, PY2019; 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 4 of 5; records 151–200 of 215 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1255335659?year=2019&recipient=provider&page=4#records-h. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e.
APA 7
IndustryPayments. (2026). DONALD J MAHON, NPI 1255335659, CMS profile ID 193309. General Payments, PY2019; 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 4 of 5; records 151–200 of 215 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1255335659?year=2019&recipient=provider&page=4#records-h. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e.
Bluebook
DONALD J MAHON, NPI 1255335659, CMS profile ID 193309, IndustryPayments, General Payments, PY2019; 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 4 of 5; records 151–200 of 215 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/4e54dd6c-30f8-4f86-86a7-3c109a89528e. https://industrypayments.org/provider/npi-1255335659?year=2019&recipient=provider&page=4#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

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 151–200 of 215.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
SANOFI-AVENTIS U.S. LLC $20.2304/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 694024607 CMS
Actelion Pharmaceuticals US, Inc. $19.6104/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659758067 CMS
SANOFI-AVENTIS U.S. LLC $17.1704/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 694010169 CMS
Amgen Inc. $18.9104/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 663230665 CMS
Actelion Pharmaceuticals US, Inc. $19.8504/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659758061 CMS
Amgen Inc. $26.0404/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 663230661 CMS
Gilead Sciences, Inc. $22.1204/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557937 CMS
PORTOLA PHARMACEUTICALS, INC. $7.9404/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 705263731 CMS
Kowa Pharmaceuticals America, Inc. $14.3704/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 630284171 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $17.2504/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 625141493 CMS
E.R. Squibb & Sons, L.L.C. $9.5304/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325629 CMS
E.R. Squibb & Sons, L.L.C. $1.2704/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325631 CMS
E.R. Squibb & Sons, L.L.C. $1.4504/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325633 CMS
PFIZER INC. $4.1003/30/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 673216925 CMS
Janssen Pharmaceuticals, Inc $9.2803/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658956535 CMS
PFIZER INC. $11.6803/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 673208129 CMS
Novartis Pharmaceuticals Corporation $14.3603/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659817811 CMS
PFIZER INC. $0.5103/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 673201095 CMS
Actelion Pharmaceuticals US, Inc. $16.6403/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659758057 CMS
Janssen Pharmaceuticals, Inc $16.7203/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658956531 CMS
Amgen Inc. $24.6703/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662310743 CMS
Novartis Pharmaceuticals Corporation $14.3303/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659817813 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $17.6603/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 625141487 CMS
PORTOLA PHARMACEUTICALS, INC. $24.0203/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 705257597 CMS
Janssen Pharmaceuticals, Inc $13.1303/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658956527 CMS
Actelion Pharmaceuticals US, Inc. $18.6703/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659758051 CMS
E.R. Squibb & Sons, L.L.C. $7.7703/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325589 CMS
E.R. Squibb & Sons, L.L.C. $0.6303/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325599 CMS
Gilead Sciences, Inc. $20.0503/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557935 CMS
Janssen Pharmaceuticals, Inc $7.5703/01/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658956523 CMS
Amgen Inc. $32.3402/28/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 662310741 CMS
Novartis Pharmaceuticals Corporation $15.8102/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659817807 CMS
Novartis Pharmaceuticals Corporation $13.2902/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659817809 CMS
AstraZeneca Pharmaceuticals LP $12.9502/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 685323313 CMS
Gilead Sciences, Inc. $0.6102/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557931 CMS
Gilead Sciences, Inc. $11.4202/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557933 CMS
PFIZER INC. $3.9802/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 673221535 CMS
E.R. Squibb & Sons, L.L.C. $0.9302/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325467 CMS
E.R. Squibb & Sons, L.L.C. $1.5202/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325591 CMS
E.R. Squibb & Sons, L.L.C. $1.6702/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325593 CMS
E.R. Squibb & Sons, L.L.C. $12.3402/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 651325595 CMS
Gilead Sciences, Inc. $0.8902/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557929 CMS
Novartis Pharmaceuticals Corporation $13.1102/07/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659817805 CMS
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $11.3902/07/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 625141501 CMS
Gilead Sciences, Inc. $23.0802/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 681557927 CMS
Actelion Pharmaceuticals US, Inc. $15.9502/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 659758047 CMS
Janssen Pharmaceuticals, Inc $10.9602/02/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 658956509 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $21.6001/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 700281937 CMS
Abbott Laboratories $139.6001/30/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 664516725 CMS
PFIZER INC. $0.5401/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 673215367 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.