Covered recipient · General Payments record
CHARLES W MCMAHON
Allopathic & Osteopathic Physicians Internal Medicine Gastroenterology
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General Payments · PY2024 · Entire year
$818.88
41 records · 0 disputed
“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 payment | Amount | Records |
|---|---|---|
| Food and Beverage | $768.74 | 38 |
| Education | $50.14 | 3 |
By paying entity
PY2024 · entire year · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| ABBVIE INC. | $291.91 | 16 |
| Ardelyx, Inc. | $138.13 | 5 |
| Celltrion USA Inc. | $66.05 | 4 |
| Daiichi Sankyo Inc. | $52.22 | 2 |
| Merck Sharp & Dohme LLC | $41.22 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $36.33 | 2 |
| Celgene Corporation | $36.07 | 2 |
| GENZYME CORPORATION | $29.69 | 1 |
| Janssen Biotech, Inc. | $28.53 | 1 |
| AIMMUNE THERAPEUTICS, INC. | $25.44 | 1 |
| IRONWOOD PHARMACEUTICALS, INC | $20.91 | 1 |
| Organon Llc | $18.64 | 1 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $16.73 | 1 |
| Phathom Pharmaceuticals, Inc. | $13.51 | 1 |
| Micro-tech Endoscopy USA, Inc. | $3.50 | 1 |
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
41 matching records · $818.88 reported total · 0 disputed
Nature of payment: All payment types
Records imported here (UTC).
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 1–41 of 41.
| Paying entity | Amount | Date | Nature of payment | Dispute status | Publication flags | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|---|
| Celltrion USA Inc. | $15.91 | 12/11/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1075855157 | CMS |
| Merck Sharp & Dohme LLC | $21.44 | 12/04/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1141856928 | CMS |
| Ardelyx, Inc. | $30.90 | 11/20/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1146695000 | CMS |
| ABBVIE INC. | $23.22 | 11/14/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008423 | CMS |
| ABBVIE INC. | $20.72 | 11/07/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008421 | CMS |
| GENZYME CORPORATION | $29.69 | 10/29/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1139815285 | CMS |
| ABBVIE INC. | $24.35 | 10/23/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008419 | CMS |
| Organon Llc | $18.64 | 10/17/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1136259740 | CMS |
| ABBVIE INC. | $15.97 | 10/16/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008417 | CMS |
| ABBVIE INC. | $18.57 | 09/18/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008415 | CMS |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $16.73 | 09/17/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1153761907 | CMS |
| Ardelyx, Inc. | $33.69 | 09/13/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1146694998 | CMS |
| Merck Sharp & Dohme LLC | $19.78 | 09/09/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1141658004 | CMS |
| Takeda Pharmaceuticals U.S.A., Inc. | $20.63 | 08/28/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1137633371 | CMS |
| ABBVIE INC. | $18.65 | 08/21/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008413 | CMS |
| Daiichi Sankyo Inc. | $29.25 | 08/19/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1089455360 | CMS |
| ABBVIE INC. | $16.47 | 08/15/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008411 | CMS |
| Ardelyx, Inc. | $33.69 | 08/13/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1146694996 | CMS |
| Takeda Pharmaceuticals U.S.A., Inc. | $15.70 | 07/31/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1137633369 | CMS |
| Janssen Biotech, Inc. | $28.53 | 07/30/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1078786918 | CMS |
| ABBVIE INC. | $19.44 | 07/25/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008409 | CMS |
| Micro-tech Endoscopy USA, Inc. | $3.50 | 07/01/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1085602026 | CMS |
| ABBVIE INC. | $21.51 | 06/27/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008407 | CMS |
| Daiichi Sankyo Inc. | $22.97 | 06/13/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1089455358 | CMS |
| ABBVIE INC. | $6.10 | 06/12/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008405 | CMS |
| IRONWOOD PHARMACEUTICALS, INC | $20.91 | 06/12/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1153757681 | CMS |
| ABBVIE INC. | $18.88 | 05/15/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008403 | CMS |
| Ardelyx, Inc. | $17.92 | 05/13/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1146694994 | CMS |
| ABBVIE INC. | $13.63 | 04/12/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008401 | CMS |
| Celltrion USA Inc. | $15.93 | 04/08/2024 | Education | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1075855155 | CMS |
| ABBVIE INC. | $18.40 | 04/04/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008399 | CMS |
| ABBVIE INC. | $17.14 | 03/26/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008397 | CMS |
| Celgene Corporation | $21.80 | 03/20/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1101150477 | CMS |
| ABBVIE INC. | $19.67 | 03/13/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008395 | CMS |
| Celltrion USA Inc. | $14.02 | 03/13/2024 | Education | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1075855153 | CMS |
| Ardelyx, Inc. | $21.93 | 03/06/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1146694992 | CMS |
| Phathom Pharmaceuticals, Inc. | $13.51 | 02/28/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1151095359 | CMS |
| ABBVIE INC. | $19.19 | 02/02/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1105008393 | CMS |
| Celgene Corporation | $14.27 | 01/23/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1101150463 | CMS |
| AIMMUNE THERAPEUTICS, INC. | $25.44 | 01/22/2024 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1147013198 | CMS |
| Celltrion USA Inc. | $20.19 | 01/16/2024 | Education | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 1075855151 | CMS |
By program year
All program years on this page · sorted by year
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
- 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.
Permalink https://industrypayments.org/provider/npi-1861768053
- Plain
- CHARLES W MCMAHON, NPI 1861768053. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1861768053.
- APA 7
- IndustryPayments. (2026). CHARLES W MCMAHON, NPI 1861768053 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1861768053
- Bluebook
- CHARLES W MCMAHON, NPI 1861768053, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1861768053.
Source: Centers for Medicare & Medicaid Services, Open Payments.