Covered recipient · General Payments record

THOMAS O MAYER

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology

NPI: 1104813930
CMS profile: 423204
Location: SHERIDAN, WY

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 · PY2020 · Entire year

$638.86

41 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 July 26, 2026. 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

PY2020 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$638.86	41

By paying entity

PY2020 · entire year · sorted by reported total

Paying entity	Amount	Records
E.R. Squibb & Sons, L.L.C.	$147.51	10
EMD Serono, Inc.	$95.52	6
Upsher-Smith Laboratories LLC	$84.76	5
Sunovion Pharmaceuticals Inc.	$76.47	4
Biogen, Inc.	$65.35	4
Lilly USA, LLC	$46.92	3
GENZYME CORPORATION	$29.28	2
Novartis Pharmaceuticals Corporation	$22.29	2
Teva Pharmaceuticals USA, Inc.	$15.40	1
Nevro Corp.	$14.99	1
Abbott Laboratories	$14.93	1
Lundbeck LLC	$13.92	1
Allergan, Inc.	$11.52	1

Page 1 of 1; records 1–41 of 41 matching records. This page contains 41 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

THOMAS O MAYER

NPI 1104813930 · CMS profile ID 423204

Allopathic & Osteopathic Physicians / Psychiatry & Neurology / Neurology

SHERIDAN, WY

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, PY2020; 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 1 of 1; records 1–41 of 41 matching records. This page contains 41 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1104813930?year=2020&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019

Cite these filtered records

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

Plain: THOMAS O MAYER, NPI 1104813930, CMS profile ID 423204. General Payments, PY2020; 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 1 of 1; records 1–41 of 41 matching records. This page contains 41 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1104813930?year=2020&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019.
APA 7: IndustryPayments. (2026). THOMAS O MAYER, NPI 1104813930, CMS profile ID 423204. General Payments, PY2020; 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 1 of 1; records 1–41 of 41 matching records. This page contains 41 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1104813930?year=2020&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019.
Bluebook: THOMAS O MAYER, NPI 1104813930, CMS profile ID 423204, IndustryPayments, General Payments, PY2020; 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 1 of 1; records 1–41 of 41 matching records. This page contains 41 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/a08c4b30-5cf3-4948-ad40-36f404619019. https://industrypayments.org/provider/npi-1104813930?year=2020&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

General Payments only. Research Payments and Ownership/Investment Interests are separate datasets and are not included.

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

Centers for Medicare & Medicaid Services, Open Payments

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.

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.

IndustryPayments.org is not a consumer reporting agency as defined by the Fair Credit Reporting Act. Do not use this site to determine any person's eligibility for employment, credentialing, insurance, credit, housing, or any other purpose covered by the FCRA.

Methodology: https://industrypayments.org/methodology

Payment records · PY2020

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

General Payments · PY2020 · Physicians and non-physician practitioners · CMS publication 2026-06-30

41 matching records · $638.86 reported total · 0 disputed

Nature of payment: All payment types

Records imported here November 5, 2026 (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 41 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 1–41 of 41.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Upsher-Smith Laboratories LLC	$17.69	12/21/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	733047341	CMS
EMD Serono, Inc.	$13.84	12/17/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	751297893	CMS
EMD Serono, Inc.	$13.84	12/17/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	840414965	CMS
E.R. Squibb & Sons, L.L.C.	$10.59	12/15/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881931	CMS
Lilly USA, LLC	$14.55	12/08/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	728679893	CMS
E.R. Squibb & Sons, L.L.C.	$21.31	12/01/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881925	CMS
E.R. Squibb & Sons, L.L.C.	$10.38	11/18/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881909	CMS
Sunovion Pharmaceuticals Inc.	$16.81	11/17/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	748393967	CMS
Upsher-Smith Laboratories LLC	$16.19	11/04/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	733038561	CMS
EMD Serono, Inc.	$18.03	11/03/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	751293611	CMS
Sunovion Pharmaceuticals Inc.	$26.71	10/22/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	748393971	CMS
Biogen, Inc.	$12.91	10/20/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	737285483	CMS
Novartis Pharmaceuticals Corporation	$11.07	10/13/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	726009375	CMS
E.R. Squibb & Sons, L.L.C.	$15.17	10/01/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881865	CMS
Teva Pharmaceuticals USA, Inc.	$15.40	09/29/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	749569085	CMS
Biogen, Inc.	$13.26	09/28/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	737285477	CMS
Upsher-Smith Laboratories LLC	$20.00	09/15/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	733049293	CMS
E.R. Squibb & Sons, L.L.C.	$12.07	09/10/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881851	CMS
EMD Serono, Inc.	$18.30	09/03/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	751285429	CMS
Lilly USA, LLC	$18.47	09/02/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	728659795	CMS
Nevro Corp.	$14.99	09/01/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	718287719	CMS
Biogen, Inc.	$19.80	08/25/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	737285479	CMS
Abbott Laboratories	$14.93	08/24/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	746592425	CMS
GENZYME CORPORATION	$12.75	08/18/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	744174439	CMS
Sunovion Pharmaceuticals Inc.	$18.53	08/03/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	748393969	CMS
Novartis Pharmaceuticals Corporation	$11.22	07/29/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	726009371	CMS
E.R. Squibb & Sons, L.L.C.	$18.86	07/27/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881841	CMS
Allergan, Inc.	$11.52	07/22/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	723789099	CMS
E.R. Squibb & Sons, L.L.C.	$8.37	07/20/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881835	CMS
Lundbeck LLC	$13.92	07/14/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	747551343	CMS
E.R. Squibb & Sons, L.L.C.	$13.17	06/30/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881833	CMS
Sunovion Pharmaceuticals Inc.	$14.42	06/29/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	748393965	CMS
E.R. Squibb & Sons, L.L.C.	$11.47	06/18/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881829	CMS
E.R. Squibb & Sons, L.L.C.	$26.12	06/09/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	727881825	CMS
Upsher-Smith Laboratories LLC	$17.92	06/02/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	733035257	CMS
EMD Serono, Inc.	$13.73	04/23/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	751278235	CMS
EMD Serono, Inc.	$17.78	04/02/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	751276583	CMS
Upsher-Smith Laboratories LLC	$12.96	03/24/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	733043603	CMS
Biogen, Inc.	$19.38	03/04/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	737285481	CMS
Lilly USA, LLC	$13.90	02/17/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	728676511	CMS
GENZYME CORPORATION	$16.53	01/22/2020	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	744174361	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$524.94	29
PY2020	$638.86	41
PY2021	$1,230.40	77
PY2022	$1,317.78	77
PY2023	$1,453.04	71
PY2024	$1,372.46	65
PY2025	$1,207.75	49

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

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.