Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

DAVID MICHAEL MCMAHON

Allopathic & Osteopathic Physicians Psychiatry & Neurology Psychiatry

NPI: 1457662249
CMS profile: 404454
Location: GREEN BAY, WI

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.

General Payments · PY2019–2025

CMS publication 2026-06-30

Latest program year · PY2025

$2,095.45

100 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.
Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$1,868.72	97
Education	$226.73	3

By paying entity

PY2025 · sorted by reported total

Paying entity	Amount	Records
Alkermes, Inc.	$389.74	16
Axsome Therapeutics, Inc.	$330.69	23
ABBVIE INC.	$289.96	14
Teva Pharmaceuticals USA, Inc.	$261.33	4
Lundbeck LLC	$130.30	6
Otsuka America Pharmaceutical, Inc.	$129.45	7
Collegium Pharmaceutical, Inc.	$116.74	6
Indivior Inc.	$86.82	3
Neurocrine BioSciences, Inc.	$74.01	5
Supernus Pharmaceuticals, Inc.	$71.13	4
Tris Pharma Inc	$60.76	3
ITI, Inc.	$43.03	2
Braeburn Inc.	$34.40	2
Almatica Pharma LLC	$19.43	1
Vertical Pharmaceuticals, LLC	$14.57	1
Takeda Pharmaceuticals U.S.A., Inc.	$14.47	1
Janssen Pharmaceuticals, Inc	$14.41	1
Sage Therapeutics, Inc.	$14.21	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$1,421.56	68
PY2020	$271.10	10
PY2021	$59.19	2
PY2022	$345.93	3
PY2023	$202.06	4
PY2024	$1,395.95	61
PY2025	$2,095.45	100

Payment records · PY2025 (100)

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

Program year 2025 2019 2020 2021 2022 2023 2024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.

Paying entity	Amount	Date	Nature of payment	Dispute status	Published	Record ID	Source
ABBVIE INC.	$22.86	12/22/2025	Food and Beverage	No dispute reported	06/30/2026	1203058588	CMS
Lundbeck LLC	$24.12	12/17/2025	Food and Beverage	No dispute reported	06/30/2026	1251824405	CMS
Collegium Pharmaceutical, Inc.	$17.14	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1224172428	CMS
ABBVIE INC.	$23.28	12/10/2025	Food and Beverage	No dispute reported	06/30/2026	1203058586	CMS
Alkermes, Inc.	$26.71	12/08/2025	Food and Beverage	No dispute reported	06/30/2026	1222565951	CMS
Axsome Therapeutics, Inc.	$0.96	12/02/2025	Food and Beverage	No dispute reported	06/30/2026	1235661908	CMS
Axsome Therapeutics, Inc.	$24.26	12/02/2025	Food and Beverage	No dispute reported	06/30/2026	1235661924	CMS
Otsuka America Pharmaceutical, Inc.	$20.54	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1227411634	CMS
Teva Pharmaceuticals USA, Inc.	$9.99	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1247487654	CMS
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)	$20.99	11/25/2025	Food and Beverage	No dispute reported	06/30/2026	1241363405	CMS
Collegium Pharmaceutical, Inc.	$23.93	11/23/2025	Food and Beverage	No dispute reported	06/30/2026	1224172426	CMS
ABBVIE INC.	$24.38	11/18/2025	Food and Beverage	No dispute reported	06/30/2026	1203058584	CMS
Axsome Therapeutics, Inc.	$28.90	11/17/2025	Food and Beverage	No dispute reported	06/30/2026	1235610650	CMS
Alkermes, Inc.	$0.26	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1222565947	CMS
Alkermes, Inc.	$13.73	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1222565949	CMS
ABBVIE INC.	$15.72	11/10/2025	Food and Beverage	No dispute reported	06/30/2026	1203058582	CMS
Neurocrine BioSciences, Inc.	$16.85	11/04/2025	Food and Beverage	No dispute reported	06/30/2026	1243037685	CMS
Alkermes, Inc.	$27.27	11/03/2025	Food and Beverage	No dispute reported	06/30/2026	1222565945	CMS
Sage Therapeutics, LLC	$14.21	10/28/2025	Food and Beverage	No dispute reported	06/30/2026	1211459012	CMS
Supernus Pharmaceuticals, Inc.	$14.21	10/28/2025	Food and Beverage	No dispute reported	06/30/2026	1244911643	CMS
Otsuka America Pharmaceutical, Inc.	$21.32	10/27/2025	Food and Beverage	No dispute reported	06/30/2026	1227411630	CMS
ABBVIE INC.	$18.56	10/22/2025	Food and Beverage	No dispute reported	06/30/2026	1203058580	CMS
Axsome Therapeutics, Inc.	$23.75	10/20/2025	Food and Beverage	No dispute reported	06/30/2026	1235552994	CMS
Axsome Therapeutics, Inc.	$1.64	10/20/2025	Food and Beverage	No dispute reported	06/30/2026	1235553024	CMS
Vertical Pharmaceuticals, LLC	$14.57	10/14/2025	Food and Beverage	No dispute reported	06/30/2026	1241770100	CMS
Axsome Therapeutics, Inc.	$27.81	10/07/2025	Food and Beverage	No dispute reported	06/30/2026	1235552867	CMS
Axsome Therapeutics, Inc.	$1.08	10/07/2025	Food and Beverage	No dispute reported	06/30/2026	1235552883	CMS
Alkermes, Inc.	$33.53	10/06/2025	Food and Beverage	No dispute reported	06/30/2026	1222565943	CMS
Collegium Pharmaceutical, Inc.	$18.09	09/29/2025	Food and Beverage	No dispute reported	06/30/2026	1224172422	CMS
Braeburn Inc.	$16.85	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1249059145	CMS
Neurocrine BioSciences, Inc.	$13.61	09/22/2025	Food and Beverage	No dispute reported	06/30/2026	1243046193	CMS
ABBVIE INC.	$23.52	09/16/2025	Food and Beverage	No dispute reported	06/30/2026	1203058578	CMS
Otsuka America Pharmaceutical, Inc.	$15.93	09/15/2025	Food and Beverage	No dispute reported	06/30/2026	1227411626	CMS
Alkermes, Inc.	$27.51	09/08/2025	Food and Beverage	No dispute reported	06/30/2026	1222565941	CMS
ABBVIE INC.	$25.63	08/26/2025	Food and Beverage	No dispute reported	06/30/2026	1203058576	CMS
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)	$22.04	08/19/2025	Food and Beverage	No dispute reported	06/30/2026	1241363403	CMS
Lundbeck LLC	$21.16	08/12/2025	Food and Beverage	No dispute reported	06/30/2026	1251824403	CMS
Alkermes, Inc.	$30.33	08/11/2025	Food and Beverage	No dispute reported	06/30/2026	1222565939	CMS
Supernus Pharmaceuticals, Inc.	$23.98	08/04/2025	Food and Beverage	No dispute reported	06/30/2026	1244911645	CMS
Almatica Pharma LLC	$19.43	07/21/2025	Food and Beverage	No dispute reported	06/30/2026	1209934333	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$14.47	07/17/2025	Food and Beverage	No dispute reported	06/30/2026	1223815996	CMS
Collegium Pharmaceutical, Inc.	$14.09	07/16/2025	Food and Beverage	No dispute reported	06/30/2026	1224172424	CMS
ABBVIE INC.	$19.26	07/15/2025	Food and Beverage	No dispute reported	06/30/2026	1203058574	CMS
Alkermes, Inc.	$30.33	07/14/2025	Food and Beverage	No dispute reported	06/30/2026	1222565937	CMS
Collegium Pharmaceutical, Inc.	$22.98	07/06/2025	Food and Beverage	No dispute reported	06/30/2026	1224172420	CMS
Axsome Therapeutics, Inc.	$27.21	07/01/2025	Food and Beverage	No dispute reported	06/30/2026	1235420425	CMS
Axsome Therapeutics, Inc.	$0.89	07/01/2025	Food and Beverage	No dispute reported	06/30/2026	1235420463	CMS
Otsuka America Pharmaceutical, Inc.	$15.45	06/30/2025	Food and Beverage	No dispute reported	06/30/2026	1227411622	CMS
ABBVIE INC.	$20.12	06/24/2025	Food and Beverage	No dispute reported	06/30/2026	1203058572	CMS
ABBVIE INC.	$19.03	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1203058570	CMS
Axsome Therapeutics, Inc.	$22.19	06/16/2025	Food and Beverage	No dispute reported	06/30/2026	1235297629	CMS
Axsome Therapeutics, Inc.	$1.35	06/16/2025	Food and Beverage	No dispute reported	06/30/2026	1235297641	CMS
Lundbeck LLC	$23.55	06/11/2025	Food and Beverage	No dispute reported	06/30/2026	1251824401	CMS
Tris Pharma Inc	$19.22	06/09/2025	Food and Beverage	No dispute reported	06/30/2026	1192277891	CMS
Teva Pharmaceuticals USA, Inc.	$28.40	06/03/2025	Food and Beverage	No dispute reported	06/30/2026	1247487572	CMS
Alkermes, Inc.	$28.06	06/02/2025	Food and Beverage	No dispute reported	06/30/2026	1222565935	CMS
ABBVIE INC.	$30.48	05/13/2025	Food and Beverage	No dispute reported	06/30/2026	1203058568	CMS
Supernus Pharmaceuticals, Inc.	$14.78	05/12/2025	Food and Beverage	No dispute reported	06/30/2026	1244911641	CMS
Axsome Therapeutics, Inc.	$25.71	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1235731988	CMS
Axsome Therapeutics, Inc.	$1.17	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1235732014	CMS
Alkermes, Inc.	$30.22	05/05/2025	Food and Beverage	No dispute reported	06/30/2026	1222565933	CMS
ABBVIE INC.	$21.77	04/28/2025	Food and Beverage	No dispute reported	06/30/2026	1203058566	CMS
Lundbeck LLC	$20.01	04/22/2025	Food and Beverage	No dispute reported	06/30/2026	1251824399	CMS
Axsome Therapeutics, Inc.	$25.73	04/21/2025	Food and Beverage	No dispute reported	06/30/2026	1235717801	CMS
Axsome Therapeutics, Inc.	$0.77	04/21/2025	Food and Beverage	No dispute reported	06/30/2026	1235717813	CMS
Janssen Pharmaceuticals, Inc	$14.41	04/16/2025	Food and Beverage	No dispute reported	06/30/2026	1175034326	CMS
Otsuka America Pharmaceutical, Inc.	$18.96	04/14/2025	Food and Beverage	No dispute reported	06/30/2026	1227411618	CMS
Teva Pharmaceuticals USA, Inc.	$111.45	04/11/2025	Education	No dispute reported	06/30/2026	1247487534	CMS
Teva Pharmaceuticals USA, Inc.	$111.49	04/11/2025	Education	No dispute reported	06/30/2026	1247487536	CMS
Axsome Therapeutics, Inc.	$27.55	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1235717723	CMS
Axsome Therapeutics, Inc.	$0.71	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1235717743	CMS
Alkermes, Inc.	$3.79	04/07/2025	Education	No dispute reported	06/30/2026	1222565929	CMS
Alkermes, Inc.	$30.35	04/07/2025	Food and Beverage	No dispute reported	06/30/2026	1222565931	CMS
Indivior Inc.	$27.68	04/02/2025	Food and Beverage	No dispute reported	06/30/2026	1240491133	CMS
Tris Pharma Inc	$24.93	03/19/2025	Food and Beverage	No dispute reported	06/30/2026	1192277893	CMS
Lundbeck LLC	$19.04	03/18/2025	Food and Beverage	No dispute reported	06/30/2026	1251824397	CMS
Alkermes, Inc.	$18.66	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1222565927	CMS
Axsome Therapeutics, Inc.	$30.76	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1235696884	CMS
Axsome Therapeutics, Inc.	$1.06	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1235697237	CMS
Alkermes, Inc.	$25.96	03/10/2025	Food and Beverage	No dispute reported	06/30/2026	1222565925	CMS
Collegium Pharmaceutical, Inc.	$20.51	03/03/2025	Food and Beverage	No dispute reported	06/30/2026	1224172418	CMS
Indivior Inc.	$26.17	02/27/2025	Food and Beverage	No dispute reported	06/30/2026	1240491127	CMS
Braeburn Inc.	$17.55	02/25/2025	Food and Beverage	No dispute reported	06/30/2026	1249059147	CMS
Alkermes, Inc.	$28.88	02/24/2025	Food and Beverage	No dispute reported	06/30/2026	1222565923	CMS
ABBVIE INC.	$13.29	02/18/2025	Food and Beverage	No dispute reported	06/30/2026	1203058564	CMS
Supernus Pharmaceuticals, Inc.	$18.16	02/17/2025	Food and Beverage	No dispute reported	06/30/2026	1244862963	CMS
Axsome Therapeutics, Inc.	$27.90	02/11/2025	Food and Beverage	No dispute reported	06/30/2026	1235384643	CMS
Axsome Therapeutics, Inc.	$0.91	02/11/2025	Food and Beverage	No dispute reported	06/30/2026	1235384684	CMS
Neurocrine BioSciences, Inc.	$14.34	02/10/2025	Food and Beverage	No dispute reported	06/30/2026	1243044538	CMS
Otsuka America Pharmaceutical, Inc.	$15.89	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1227411615	CMS
Neurocrine BioSciences, Inc.	$15.22	02/03/2025	Food and Beverage	No dispute reported	06/30/2026	1243042243	CMS
Tris Pharma Inc	$16.61	01/27/2025	Food and Beverage	No dispute reported	06/30/2026	1192277889	CMS
Lundbeck LLC	$22.42	01/22/2025	Food and Beverage	No dispute reported	06/30/2026	1251824395	CMS
Neurocrine BioSciences, Inc.	$13.99	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1243045362	CMS
Axsome Therapeutics, Inc.	$27.28	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1235347465	CMS
Axsome Therapeutics, Inc.	$1.10	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1235347500	CMS
Alkermes, Inc.	$34.15	01/13/2025	Food and Beverage	No dispute reported	06/30/2026	1222565921	CMS
Indivior Inc.	$32.97	01/09/2025	Food and Beverage	No dispute reported	06/30/2026	1240491122	CMS
ABBVIE INC.	$12.06	01/07/2025	Food and Beverage	No dispute reported	06/30/2026	1203058562	CMS
Otsuka America Pharmaceutical, Inc.	$21.36	01/06/2025	Food and Beverage	No dispute reported	06/30/2026	1227411609	CMS

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: Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
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-1457662249

Plain: DAVID MICHAEL MCMAHON, NPI 1457662249. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1457662249.
APA 7: IndustryPayments. (2026). DAVID MICHAEL MCMAHON, NPI 1457662249 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1457662249
Bluebook: DAVID MICHAEL MCMAHON, NPI 1457662249, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1457662249.

Source: Centers for Medicare & Medicaid Services, Open Payments.